diff --git a/BEdit/.vscode/tasks.json b/BEdit/.vscode/tasks.json
index a5b5d1b..e618f1b 100644
--- a/BEdit/.vscode/tasks.json
+++ b/BEdit/.vscode/tasks.json
@@ -115,6 +115,14 @@
             "options": {"cwd": "${workspaceFolder}"},
             "problemMatcher": []
         },
+        {
+            "label": "Qt: Compile Simulation Window UI to Python",
+            "type": "shell",
+            "command": "pyside6-uic",
+            "args": ["--from-imports", "${workspaceFolder}/ui/simulation_window.ui", "-o", "${workspaceFolder}/src/bedit/gui/generated/ui_simulation_window.py"],
+            "options": {"cwd": "${workspaceFolder}"},
+            "problemMatcher": []
+        },
         {
             "label": "Qt: Build Designer Files",
             "dependsOrder": "sequence",
@@ -125,7 +133,8 @@
                 "Qt: Compile Component Options UI to Python",
                 "Qt: Compile Port Options UI to Python",
                 "Qt: Compile Shape Options UI to Python",
-                "Qt: Compile Icon Editor UI to Python"
+                "Qt: Compile Icon Editor UI to Python",
+                "Qt: Compile Simulation Window UI to Python"
             ],
             "problemMatcher": [],
             "group": {
diff --git a/BEdit/AGENTS.md b/BEdit/AGENTS.md
index 4376fd9..15762e2 100644
--- a/BEdit/AGENTS.md
+++ b/BEdit/AGENTS.md
@@ -139,6 +139,16 @@ Keep the root of `src/bedit` minimal. New UI modules should go into the relevant
 - After a successful OpenModelica run, `<model>_res.csv` is parsed on the worker
   before temporary-directory cleanup. `SimulationResults.data` stores every CSV
   column as a numeric array, including `time`, for later plotting and persistence.
+- The simulation window's dockable Signals tree derives hierarchy from dot-separated
+  result-column names and bracketed array indices (`a[1]` becomes `a → 1`). Leaf
+  items retain the exact full column name in `UserRole`; plotting code should
+  consume `SimulationWindow.selected_signal_names()`.
+- Simulation graph tabs persist as `SimulationResults.graphs`; every graph has a
+  stable ID, editable title, and its own `traces` list. Runtime graph widgets belong
+  in `GraphWorkspacePage.plot_layout`, not in the serialized core model. The
+  Signals tree checkboxes edit the active graph's traces, and each page embeds a
+  Matplotlib QtAgg canvas. Each graph persists its own `x_axis` signal (default
+  `time`), selectable from the Signals tree context menu.
 - The optional OpenModelica executable is persisted as
   `simulation/openModelicaPath`. The GUI passes it into `Simulation`; core must
   not read `QSettings`. An empty path uses OMPython/PATH discovery, while an
diff --git a/BEdit/pyproject.toml b/BEdit/pyproject.toml
index 7d1bc00..876acbf 100644
--- a/BEdit/pyproject.toml
+++ b/BEdit/pyproject.toml
@@ -9,6 +9,7 @@ description = "A starter Qt desktop application"
 readme = "README.md"
 requires-python = ">=3.10"
 dependencies = [
+    "matplotlib>=3.8,<4",
     "msgpack>=1.0,<2",
     "PySide6>=6.7,<7",
     "OMPython>4.0",
diff --git a/BEdit/resources/icons/list-add.png b/BEdit/resources/icons/list-add.png
new file mode 100644
index 0000000..5724694
Binary files /dev/null and b/BEdit/resources/icons/list-add.png differ
diff --git a/BEdit/resources/icons/list-remove.png b/BEdit/resources/icons/list-remove.png
new file mode 100644
index 0000000..53506b0
Binary files /dev/null and b/BEdit/resources/icons/list-remove.png differ
diff --git a/BEdit/resources/resources.qrc b/BEdit/resources/resources.qrc
index 1806ce0..6cc4b06 100644
--- a/BEdit/resources/resources.qrc
+++ b/BEdit/resources/resources.qrc
@@ -1,5 +1,7 @@
 <RCC>
   <qresource prefix="icons">
+    <file>icons/list-remove.png</file>
+    <file>icons/list-add.png</file>
     <file>icons/view-form-table.png</file>
     <file>icons/office-chart-line.png</file>
     <file>icons/run-build.png</file>
diff --git a/BEdit/resources/resources_rc.py b/BEdit/resources/resources_rc.py
index e3fafc1..1975a3b 100644
--- a/BEdit/resources/resources_rc.py
+++ b/BEdit/resources/resources_rc.py
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 \x00\x0d\
 \x0b\xe6\x1f\xa7\
 \x00d\
@@ -2723,6 +2891,10 @@ qt_resource_name = b"\
 \x00o\
 \x00f\x00f\x00i\x00c\x00e\x00-\x00c\x00h\x00a\x00r\x00t\x00-\x00l\x00i\x00n\x00e\
 \x00.\x00p\x00n\x00g\
+\x00\x0c\
+\x09\xc6\x19'\
+\x00l\
+\x00i\x00s\x00t\x00-\x00a\x00d\x00d\x00.\x00p\x00n\x00g\
 \x00\x10\
 \x03\xe6\xd3g\
 \x00d\
@@ -2749,67 +2921,71 @@ qt_resource_struct = b"\
 \x00\x00\x00\x00\x00\x00\x00\x00\
 \x00\x00\x00\x00\x00\x02\x00\x00\x00\x01\x00\x00\x00\x02\
 \x00\x00\x00\x00\x00\x00\x00\x00\
-\x00\x00\x00\x00\x00\x02\x00\x00\x00\x1e\x00\x00\x00\x03\
+\x00\x00\x00\x00\x00\x02\x00\x00\x00 \x00\x00\x00\x03\
 \x00\x00\x00\x00\x00\x00\x00\x00\
-\x00\x00\x01\xfe\x00\x00\x00\x00\x00\x01\x00\x00N\xe8\
+\x00\x00\x02\x22\x00\x00\x00\x00\x00\x01\x00\x00S\x15\
 \x00\x00\x01\x9f{C\xf1'\
-\x00\x00\x02>\x00\x00\x00\x00\x00\x01\x00\x00Z\x1a\
+\x00\x00\x02b\x00\x00\x00\x00\x00\x01\x00\x00^G\
 \x00\x00\x01\x9f\x7f\xa8\xa8)\
-\x00\x00\x02\xec\x00\x00\x00\x00\x00\x01\x00\x00tV\
+\x00\x00\x03\x10\x00\x00\x00\x00\x00\x01\x00\x00x\x83\
 \x00\x00\x01\x9f{0\xc99\
-\x00\x00\x03\xa4\x00\x00\x00\x00\x00\x01\x00\x00\x8d\xaa\
+\x00\x00\x01d\x00\x00\x00\x00\x00\x01\x00\x004B\
+\x00\x00\x01\x9f\x84\xbd\x03\xb8\
+\x00\x00\x03\xc8\x00\x00\x00\x00\x00\x01\x00\x00\x91\xd7\
 \x00\x00\x01\x9f\x84\x8f\x00\xb9\
-\x00\x00\x01\xc4\x00\x00\x00\x00\x00\x01\x00\x00D2\
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-\x00\x00\x01\xa4\x00\x00\x00\x00\x00\x01\x00\x00<J\
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 \x00\x00\x01\x9f{0\xc9R\
 "
 
diff --git a/BEdit/src/bedit/core/simulation/__init__.py b/BEdit/src/bedit/core/simulation/__init__.py
index bf82ca9..76866cf 100644
--- a/BEdit/src/bedit/core/simulation/__init__.py
+++ b/BEdit/src/bedit/core/simulation/__init__.py
@@ -4,6 +4,7 @@ from bedit.core.simulation.results import (
     BerSimulationResultsSerializer,
     JsonSimulationResultsSerializer,
     SimulationExecutionResult,
+    SimulationGraph,
     SimulationResults,
     SimulationResultsSerializer,
     SimulationTrace,
@@ -14,6 +15,7 @@ __all__ = [
     "Simulation",
     "SimulationResults",
     "SimulationExecutionResult",
+    "SimulationGraph",
     "SimulationResultsSerializer",
     "SimulationTrace",
     "BerSimulationResultsSerializer",
diff --git a/BEdit/src/bedit/core/simulation/results.py b/BEdit/src/bedit/core/simulation/results.py
index 5d4e969..a962710 100644
--- a/BEdit/src/bedit/core/simulation/results.py
+++ b/BEdit/src/bedit/core/simulation/results.py
@@ -4,6 +4,7 @@ import zlib
 from dataclasses import asdict, dataclass, field
 from pathlib import Path
 from typing import Any
+from uuid import uuid4
 
 import msgpack
 
@@ -25,6 +26,16 @@ class SimulationTrace:
     properties: dict[str, Any] = field(default_factory=dict)
 
 
+@dataclass
+class SimulationGraph:
+    """One graph workspace tab and its configured traces."""
+
+    id: str = field(default_factory=lambda: str(uuid4()))
+    title: str = "Graph 1"
+    x_axis: str = "time"
+    traces: list[SimulationTrace] = field(default_factory=list)
+
+
 @dataclass
 class SimulationResults:
     """Serializable state displayed by the standalone simulation window."""
@@ -33,7 +44,9 @@ class SimulationResults:
     status: dict[str, Any] = field(default_factory=dict)
     messages: list[dict[str, str]] = field(default_factory=list)
     data: dict[str, list[float]] = field(default_factory=dict)
-    traces: list[SimulationTrace] = field(default_factory=list)
+    graphs: list[SimulationGraph] = field(
+        default_factory=lambda: [SimulationGraph()]
+    )
     metadata: dict[str, Any] = field(default_factory=dict)
 
     def to_dict(self) -> dict[str, Any]:
@@ -44,7 +57,7 @@ class SimulationResults:
             "status": dict(self.status),
             "messages": [dict(message) for message in self.messages],
             "data": {name: list(values) for name, values in self.data.items()},
-            "traces": [asdict(trace) for trace in self.traces],
+            "graphs": [asdict(graph) for graph in self.graphs],
             "metadata": dict(self.metadata),
         }
 
@@ -55,7 +68,17 @@ class SimulationResults:
         if data.get("version") != RESULTS_VERSION:
             raise ValueError(f"Unsupported simulation-results version: {data.get('version')!r}")
         try:
-            traces = [SimulationTrace(**trace) for trace in data.get("traces", [])]
+            graphs = [
+                SimulationGraph(
+                    id=str(graph["id"]),
+                    title=str(graph["title"]),
+                    x_axis=str(graph.get("x_axis", "time")),
+                    traces=[
+                        SimulationTrace(**trace) for trace in graph.get("traces", [])
+                    ],
+                )
+                for graph in data.get("graphs", [])
+            ]
             return cls(
                 model_name=str(data.get("modelName", "")),
                 status=dict(data.get("status", {})),
@@ -64,10 +87,10 @@ class SimulationResults:
                     str(name): [float(value) for value in values]
                     for name, values in dict(data.get("data", {})).items()
                 },
-                traces=traces,
+                graphs=graphs,
                 metadata=dict(data.get("metadata", {})),
             )
-        except (TypeError, ValueError) as error:
+        except (KeyError, TypeError, ValueError) as error:
             raise ValueError("Malformed simulation-results data") from error
 
 
diff --git a/BEdit/src/bedit/gui/generated/resources_rc.py b/BEdit/src/bedit/gui/generated/resources_rc.py
index e3fafc1..1975a3b 100644
--- a/BEdit/src/bedit/gui/generated/resources_rc.py
+++ b/BEdit/src/bedit/gui/generated/resources_rc.py
@@ -862,6 +862,75 @@ N\xa7\xd3>==\xfd\xa1\xc3\xe1\x98\x92$\xe9I\x00\
 \xbf\xc9\xd3\x01\x9f\xa3\x0f\x17Z/\xe3\x7f\xe1/\x17\x85\
 \xd6\x06q(\x0e\x10\x00\x00\x00\x00IEND\xaeB\
 `\x82\
+\x00\x00\x04)\
+\x89\
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+\x00\x00 \x00\x00\x00 \x08\x06\x00\x00\x00szz\xf4\
+\x00\x00\x00\x06bKGD\x00\xff\x00\xff\x00\xff\xa0\xbd\
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+7\x5c\x01\xcb\xc7\xa4\xb9\x00\x00\x03\x9bIDATx\
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+\x87\xd40J\xdbk\xee5\xc9\x09=\xd8\xb2\xea\x8dK\
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+mI\xdc\x224`\xfaE~\xe9\x0e\xa4\xd3=B\xa7\
+F\xe9\xe8\xe8\x1dE\x90B&\xd1)\x0c\xc4`,c\
+\x19\xcbX\x06\xf2'\xe3\xdf\x9d\x06\x06\xf6\x92\x0e\x00\x00\
+\x00\x22zTXtSoftware\x00\x00\
+x\xda+//\xd7\xcb\xcc\xcb.NN,H\xd5\xcb\
+/J\x07\x006\xd8\x06X\x10S\xca\x5c\x00\x00\x00\x00\
+IEND\xaeB`\x82\
 \x00\x00\x02V\
 \x89\
 PNG\x0d\x0a\x1a\x0a\x00\x00\x00\x0dIHDR\x00\
@@ -2383,6 +2452,101 @@ u1\xb8\xdd0`x\xe8F\xf9\x1e\xe19\xea\x8a\x03\
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+\x00\x00\x00\x09pHYs\x00\x00\x03v\x00\x00\x03v\
+\x01}\xd5\x82\xcc\x00\x00\x00\x19tEXtSof\
+tware\x00www.inksca\
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+ \xdf\x1c\xbc\xb9ym\xa0W7*\xb4\xe6\xf3 c\
+\xc0Dx\xa2\xf9q\xc8@Add$`\xdeN\x0d\
+\xe0N\xff\xec\x05\xd9\x1c=?\xee\xf3\xe5\xfb\x22Z\xa0\
+,\x83\xeb\x18*\xab\xc2 \x9b\xb9\x12\xa0n\xffD\x7f\
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 \x89\
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@@ -2649,6 +2813,10 @@ qt_resource_name = b"\
 \x0f\xba\x1e'\
 \x00d\
 \x00r\x00a\x00w\x00-\x00p\x00a\x00t\x00h\x00.\x00p\x00n\x00g\
+\x00\x0f\
+\x020\x8b\xe7\
+\x00l\
+\x00i\x00s\x00t\x00-\x00r\x00e\x00m\x00o\x00v\x00e\x00.\x00p\x00n\x00g\
 \x00\x0d\
 \x0b\xe6\x1f\xa7\
 \x00d\
@@ -2723,6 +2891,10 @@ qt_resource_name = b"\
 \x00o\
 \x00f\x00f\x00i\x00c\x00e\x00-\x00c\x00h\x00a\x00r\x00t\x00-\x00l\x00i\x00n\x00e\
 \x00.\x00p\x00n\x00g\
+\x00\x0c\
+\x09\xc6\x19'\
+\x00l\
+\x00i\x00s\x00t\x00-\x00a\x00d\x00d\x00.\x00p\x00n\x00g\
 \x00\x10\
 \x03\xe6\xd3g\
 \x00d\
@@ -2749,67 +2921,71 @@ qt_resource_struct = b"\
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 "
 
diff --git a/BEdit/src/bedit/gui/generated/ui_simulation_window.py b/BEdit/src/bedit/gui/generated/ui_simulation_window.py
index df5d5e9..ff501f0 100644
--- a/BEdit/src/bedit/gui/generated/ui_simulation_window.py
+++ b/BEdit/src/bedit/gui/generated/ui_simulation_window.py
@@ -16,10 +16,11 @@ from PySide6.QtGui import (QAction, QBrush, QColor, QConicalGradient,
     QIcon, QImage, QKeySequence, QLinearGradient,
     QPainter, QPalette, QPixmap, QRadialGradient,
     QTransform)
-from PySide6.QtWidgets import (QApplication, QDockWidget, QHBoxLayout, QLabel,
-    QListWidget, QListWidgetItem, QMainWindow, QMenu,
-    QMenuBar, QProgressBar, QSizePolicy, QToolBar,
-    QVBoxLayout, QWidget)
+from PySide6.QtWidgets import (QAbstractItemView, QApplication, QDockWidget, QHBoxLayout,
+    QHeaderView, QLabel, QListWidget, QListWidgetItem,
+    QMainWindow, QMenu, QMenuBar, QProgressBar,
+    QSizePolicy, QTabWidget, QToolBar, QTreeWidget,
+    QTreeWidgetItem, QVBoxLayout, QWidget)
 from . import resources_rc
 
 class Ui_SimulationWindow(object):
@@ -60,15 +61,26 @@ class Ui_SimulationWindow(object):
         self.actionToggleResults.setObjectName(u"actionToggleResults")
         self.actionToggleResults.setCheckable(True)
         self.actionToggleResults.setChecked(True)
+        self.actionAddGraph = QAction(SimulationWindow)
+        self.actionAddGraph.setObjectName(u"actionAddGraph")
+        icon5 = QIcon()
+        icon5.addFile(u":/icons/icons/list-add.png", QSize(), QIcon.Mode.Normal, QIcon.State.Off)
+        self.actionAddGraph.setIcon(icon5)
+        self.actionRemoveGraph = QAction(SimulationWindow)
+        self.actionRemoveGraph.setObjectName(u"actionRemoveGraph")
+        icon6 = QIcon()
+        icon6.addFile(u":/icons/icons/list-remove.png", QSize(), QIcon.Mode.Normal, QIcon.State.Off)
+        self.actionRemoveGraph.setIcon(icon6)
         self.centralWidget = QWidget(SimulationWindow)
         self.centralWidget.setObjectName(u"centralWidget")
         self.resultsLayout = QVBoxLayout(self.centralWidget)
         self.resultsLayout.setObjectName(u"resultsLayout")
-        self.resultsPlaceholder = QLabel(self.centralWidget)
-        self.resultsPlaceholder.setObjectName(u"resultsPlaceholder")
-        self.resultsPlaceholder.setAlignment(Qt.AlignmentFlag.AlignCenter)
+        self.graphTabs = QTabWidget(self.centralWidget)
+        self.graphTabs.setObjectName(u"graphTabs")
+        self.graphTabs.setTabsClosable(False)
+        self.graphTabs.setMovable(True)
 
-        self.resultsLayout.addWidget(self.resultsPlaceholder)
+        self.resultsLayout.addWidget(self.graphTabs)
 
         SimulationWindow.setCentralWidget(self.centralWidget)
         self.menuBar = QMenuBar(SimulationWindow)
@@ -84,7 +96,13 @@ class Ui_SimulationWindow(object):
         self.menuToolbars.setObjectName(u"menuToolbars")
         self.menuHelp = QMenu(self.menuBar)
         self.menuHelp.setObjectName(u"menuHelp")
+        self.menuGraph = QMenu(self.menuBar)
+        self.menuGraph.setObjectName(u"menuGraph")
         SimulationWindow.setMenuBar(self.menuBar)
+        self.workspaceToolbar = QToolBar(SimulationWindow)
+        self.workspaceToolbar.setObjectName(u"workspaceToolbar")
+        self.workspaceToolbar.setToolButtonStyle(Qt.ToolButtonStyle.ToolButtonIconOnly)
+        SimulationWindow.addToolBar(Qt.ToolBarArea.TopToolBarArea, self.workspaceToolbar)
         self.fileToolbar = QToolBar(SimulationWindow)
         self.fileToolbar.setObjectName(u"fileToolbar")
         self.fileToolbar.setToolButtonStyle(Qt.ToolButtonStyle.ToolButtonIconOnly)
@@ -130,9 +148,26 @@ class Ui_SimulationWindow(object):
 
         self.logDock.setWidget(self.logDockContents)
         SimulationWindow.addDockWidget(Qt.DockWidgetArea.BottomDockWidgetArea, self.logDock)
+        self.signalsDock = QDockWidget(SimulationWindow)
+        self.signalsDock.setObjectName(u"signalsDock")
+        self.signalsDockContents = QWidget()
+        self.signalsDockContents.setObjectName(u"signalsDockContents")
+        self.signalsLayout = QVBoxLayout(self.signalsDockContents)
+        self.signalsLayout.setObjectName(u"signalsLayout")
+        self.signalsTree = QTreeWidget(self.signalsDockContents)
+        self.signalsTree.setObjectName(u"signalsTree")
+        self.signalsTree.setContextMenuPolicy(Qt.ContextMenuPolicy.CustomContextMenu)
+        self.signalsTree.setSelectionMode(QAbstractItemView.SelectionMode.ExtendedSelection)
+        self.signalsTree.setHeaderHidden(True)
+
+        self.signalsLayout.addWidget(self.signalsTree)
+
+        self.signalsDock.setWidget(self.signalsDockContents)
+        SimulationWindow.addDockWidget(Qt.DockWidgetArea.RightDockWidgetArea, self.signalsDock)
 
         self.menuBar.addAction(self.menuFile.menuAction())
         self.menuBar.addAction(self.menuView.menuAction())
+        self.menuBar.addAction(self.menuGraph.menuAction())
         self.menuBar.addAction(self.menuHelp.menuAction())
         self.menuFile.addAction(self.actionOpen)
         self.menuFile.addAction(self.actionSave)
@@ -145,10 +180,14 @@ class Ui_SimulationWindow(object):
         self.menuView.addAction(self.menuToolbars.menuAction())
         self.menuHelp.addAction(self.actionAbout)
         self.menuHelp.addAction(self.actionAboutQt)
+        self.menuGraph.addAction(self.actionAddGraph)
+        self.menuGraph.addAction(self.actionRemoveGraph)
+        self.workspaceToolbar.addAction(self.actionAddGraph)
+        self.workspaceToolbar.addAction(self.actionRemoveGraph)
+        self.fileToolbar.addAction(self.actionClear)
         self.fileToolbar.addAction(self.actionOpen)
         self.fileToolbar.addAction(self.actionSave)
         self.fileToolbar.addAction(self.actionSaveAs)
-        self.fileToolbar.addAction(self.actionClear)
 
         self.retranslateUi(SimulationWindow)
 
@@ -177,17 +216,29 @@ class Ui_SimulationWindow(object):
         self.actionAbout.setText(QCoreApplication.translate("SimulationWindow", u"&About Simulation Window", None))
         self.actionAboutQt.setText(QCoreApplication.translate("SimulationWindow", u"About &Qt", None))
         self.actionToggleResults.setText(QCoreApplication.translate("SimulationWindow", u"Results", None))
-        self.resultsPlaceholder.setText(QCoreApplication.translate("SimulationWindow", u"Simulation graphs and result controls can be added here.", None))
+        self.actionAddGraph.setText(QCoreApplication.translate("SimulationWindow", u"Add Graph", None))
+#if QT_CONFIG(statustip)
+        self.actionAddGraph.setStatusTip(QCoreApplication.translate("SimulationWindow", u"Add a graph workspace tab", None))
+#endif // QT_CONFIG(statustip)
+        self.actionRemoveGraph.setText(QCoreApplication.translate("SimulationWindow", u"Remove Current Graph", None))
+#if QT_CONFIG(statustip)
+        self.actionRemoveGraph.setStatusTip(QCoreApplication.translate("SimulationWindow", u"Remove the current graph workspace tab", None))
+#endif // QT_CONFIG(statustip)
         self.menuFile.setTitle(QCoreApplication.translate("SimulationWindow", u"&File", None))
         self.menuView.setTitle(QCoreApplication.translate("SimulationWindow", u"&View", None))
         self.menuPanels.setTitle(QCoreApplication.translate("SimulationWindow", u"&Panels", None))
         self.menuToolbars.setTitle(QCoreApplication.translate("SimulationWindow", u"&Toolbars", None))
         self.menuHelp.setTitle(QCoreApplication.translate("SimulationWindow", u"&Help", None))
+        self.menuGraph.setTitle(QCoreApplication.translate("SimulationWindow", u"&Graph", None))
+        self.workspaceToolbar.setWindowTitle(QCoreApplication.translate("SimulationWindow", u"Workspace", None))
         self.fileToolbar.setWindowTitle(QCoreApplication.translate("SimulationWindow", u"File", None))
         self.statusDock.setWindowTitle(QCoreApplication.translate("SimulationWindow", u"Status", None))
         self.timeLabel.setText(QCoreApplication.translate("SimulationWindow", u"Time: 0 s", None))
         self.progressBar.setFormat(QCoreApplication.translate("SimulationWindow", u"%p%", None))
         self.statusLabel.setText(QCoreApplication.translate("SimulationWindow", u"No simulation has been run yet.", None))
         self.logDock.setWindowTitle(QCoreApplication.translate("SimulationWindow", u"Log", None))
+        self.signalsDock.setWindowTitle(QCoreApplication.translate("SimulationWindow", u"Signals", None))
+        ___qtreewidgetitem = self.signalsTree.headerItem()
+        ___qtreewidgetitem.setText(0, QCoreApplication.translate("SimulationWindow", u"Signal", None))
     # retranslateUi
 
diff --git a/BEdit/src/bedit/gui/simulation_window.py b/BEdit/src/bedit/gui/simulation_window.py
index 9b9a3c9..6dbfedd 100644
--- a/BEdit/src/bedit/gui/simulation_window.py
+++ b/BEdit/src/bedit/gui/simulation_window.py
@@ -1,13 +1,26 @@
 import re
 from pathlib import Path
 
+from matplotlib.backends.backend_qtagg import FigureCanvasQTAgg, NavigationToolbar2QT
+from matplotlib.figure import Figure
 from PySide6.QtCore import Qt, Signal
-from PySide6.QtWidgets import QFileDialog, QMainWindow, QMessageBox
+from PySide6.QtWidgets import (
+    QFileDialog,
+    QInputDialog,
+    QMainWindow,
+    QMenu,
+    QMessageBox,
+    QTreeWidgetItem,
+    QVBoxLayout,
+    QWidget,
+)
 
 from bedit.core.simulation.openmodelica import SimulationMessage, SimulationProgress
 from bedit.core.simulation.results import (
     SimulationExecutionResult,
+    SimulationGraph,
     SimulationResults,
+    SimulationTrace,
     load_simulation_results,
     save_simulation_results,
 )
@@ -29,6 +42,8 @@ class SimulationWindow(QMainWindow):
         self._running = False
         self._run_generation = 0
         self._file_path: Path | None = None
+        self._rebuilding_graph_tabs = False
+        self._updating_signal_checks = False
         self.results = SimulationResults()
         self._connect_actions()
         self._populate_view_menu()
@@ -52,12 +67,22 @@ class SimulationWindow(QMainWindow):
             lambda: QMessageBox.aboutQt(self, "About Qt Framework")
         )
         self.ui.actionToggleResults.toggled.connect(self.ui.centralWidget.setVisible)
+        self.ui.actionAddGraph.triggered.connect(self.add_graph_tab)
+        self.ui.actionRemoveGraph.triggered.connect(self.remove_current_graph_tab)
+        self.ui.graphTabs.tabBarDoubleClicked.connect(self.rename_graph_tab)
+        self.ui.graphTabs.tabBar().tabMoved.connect(self._move_graph_tab)
+        self.ui.graphTabs.currentChanged.connect(self._current_graph_changed)
+        self.ui.signalsTree.itemChanged.connect(self._signal_check_changed)
+        self.ui.signalsTree.customContextMenuRequested.connect(
+            self.show_signal_context_menu
+        )
 
     def _populate_view_menu(self) -> None:
         self.ui.menuPanels.addAction(self.ui.actionToggleResults)
-        for panel in (self.ui.statusDock, self.ui.logDock):
+        for panel in (self.ui.statusDock, self.ui.logDock, self.ui.signalsDock):
             self.ui.menuPanels.addAction(panel.toggleViewAction())
         self.ui.menuToolbars.addAction(self.ui.fileToolbar.toggleViewAction())
+        self.ui.menuToolbars.addAction(self.ui.workspaceToolbar.toggleViewAction())
 
     def begin_run(self, model_name: str = "") -> tuple:
         """Reset the viewer and return callbacks bound to this run."""
@@ -91,6 +116,7 @@ class SimulationWindow(QMainWindow):
         self.ui.timeLabel.setText("Time: 0 s")
         self.ui.messageList.clear()
         self.clear_result_views()
+        self.load_result_views()
         self._update_title()
 
     def clear_result_views(self) -> None:
@@ -100,9 +126,10 @@ class SimulationWindow(QMainWindow):
         ``resultsLayout`` and reset here.
         """
 
-        self.ui.resultsPlaceholder.setText(
-            "Simulation graphs and result controls can be added here."
-        )
+        self._rebuilding_graph_tabs = True
+        self._clear_graph_tab_widgets()
+        self._rebuilding_graph_tabs = False
+        self.ui.signalsTree.clear()
 
     def load_result_views(self) -> None:
         """Populate custom plots from ``self.results.data`` and traces.
@@ -110,14 +137,195 @@ class SimulationWindow(QMainWindow):
         This is the intended integration point for a future plotting widget.
         """
 
-        data_count = len(self.results.data)
-        trace_count = len(self.results.traces)
-        if data_count or trace_count:
-            sample_count = len(next(iter(self.results.data.values()), []))
-            self.ui.resultsPlaceholder.setText(
-                f"{data_count} data column(s), {sample_count} sample(s), and "
-                f"{trace_count} configured trace(s) loaded; add graph rendering here."
+        self._rebuild_graph_tabs()
+        self._rebuild_signal_tree()
+
+    def _rebuild_graph_tabs(self) -> None:
+        self._rebuilding_graph_tabs = True
+        self._clear_graph_tab_widgets()
+        for graph in self.results.graphs:
+            self.ui.graphTabs.addTab(
+                GraphWorkspacePage(graph, self.results), graph.title
             )
+        self._rebuilding_graph_tabs = False
+        self._update_graph_actions()
+        self._sync_signal_checks()
+
+    def _clear_graph_tab_widgets(self) -> None:
+        while self.ui.graphTabs.count():
+            page = self.ui.graphTabs.widget(0)
+            self.ui.graphTabs.removeTab(0)
+            page.deleteLater()
+
+    def add_graph_tab(self) -> None:
+        used_titles = {graph.title for graph in self.results.graphs}
+        number = 1
+        while f"Graph {number}" in used_titles:
+            number += 1
+        graph = SimulationGraph(title=f"Graph {number}")
+        self.results.graphs.append(graph)
+        index = self.ui.graphTabs.addTab(
+            GraphWorkspacePage(graph, self.results), graph.title
+        )
+        self.ui.graphTabs.setCurrentIndex(index)
+        self._update_graph_actions()
+
+    def remove_current_graph_tab(self) -> None:
+        index = self.ui.graphTabs.currentIndex()
+        if index < 0 or index >= len(self.results.graphs):
+            return
+        self.results.graphs.pop(index)
+        page = self.ui.graphTabs.widget(index)
+        self.ui.graphTabs.removeTab(index)
+        page.deleteLater()
+        self._update_graph_actions()
+        self._sync_signal_checks()
+
+    def rename_graph_tab(self, index: int) -> None:
+        if index < 0 or index >= len(self.results.graphs):
+            return
+        graph = self.results.graphs[index]
+        title, accepted = QInputDialog.getText(
+            self, "Rename Graph", "Title:", text=graph.title
+        )
+        title = title.strip()
+        if accepted and title:
+            graph.title = title
+            self.ui.graphTabs.setTabText(index, title)
+            page = self.ui.graphTabs.widget(index)
+            if isinstance(page, GraphWorkspacePage):
+                page.refresh_chart()
+
+    def _move_graph_tab(self, old_index: int, new_index: int) -> None:
+        if self._rebuilding_graph_tabs or old_index == new_index:
+            return
+        graph = self.results.graphs.pop(old_index)
+        self.results.graphs.insert(new_index, graph)
+        self._sync_signal_checks()
+
+    def _update_graph_actions(self) -> None:
+        self.ui.actionRemoveGraph.setEnabled(bool(self.results.graphs))
+
+    def _rebuild_signal_tree(self) -> None:
+        """Build a hierarchy while retaining each leaf's complete signal name."""
+
+        tree = self.ui.signalsTree
+        self._updating_signal_checks = True
+        try:
+            tree.clear()
+            items: dict[tuple[str, ...], QTreeWidgetItem] = {}
+            for signal_name in sorted(self.results.data, key=str.casefold):
+                parts = _signal_tree_parts(signal_name)
+                if not parts:
+                    continue
+                parent = tree.invisibleRootItem()
+                for depth, part in enumerate(parts, start=1):
+                    path = parts[:depth]
+                    item = items.get(path)
+                    if item is None:
+                        item = QTreeWidgetItem(parent, [part])
+                        items[path] = item
+                    parent = item
+                parent.setData(0, Qt.ItemDataRole.UserRole, signal_name)
+                parent.setToolTip(0, signal_name)
+                parent.setFlags(parent.flags() | Qt.ItemFlag.ItemIsUserCheckable)
+                parent.setCheckState(0, Qt.CheckState.Unchecked)
+            tree.expandToDepth(0)
+        finally:
+            self._updating_signal_checks = False
+        self._sync_signal_checks()
+
+    def _current_graph_changed(self, _index: int) -> None:
+        if not self._rebuilding_graph_tabs:
+            self._sync_signal_checks()
+
+    def _current_graph(self) -> SimulationGraph | None:
+        index = self.ui.graphTabs.currentIndex()
+        if 0 <= index < len(self.results.graphs):
+            return self.results.graphs[index]
+        return None
+
+    def _sync_signal_checks(self) -> None:
+        graph = self._current_graph()
+        enabled = {trace.name for trace in graph.traces} if graph else set()
+        self._updating_signal_checks = True
+        try:
+            root = self.ui.signalsTree.invisibleRootItem()
+            pending = [root.child(index) for index in range(root.childCount())]
+            while pending:
+                item = pending.pop()
+                pending.extend(
+                    item.child(index) for index in range(item.childCount())
+                )
+                signal_name = item.data(0, Qt.ItemDataRole.UserRole)
+                if isinstance(signal_name, str):
+                    item.setCheckState(
+                        0,
+                        Qt.CheckState.Checked
+                        if signal_name in enabled
+                        else Qt.CheckState.Unchecked,
+                    )
+        finally:
+            self._updating_signal_checks = False
+        self.ui.signalsTree.setEnabled(graph is not None)
+
+    def _signal_check_changed(self, item: QTreeWidgetItem, _column: int) -> None:
+        if self._updating_signal_checks:
+            return
+        signal_name = item.data(0, Qt.ItemDataRole.UserRole)
+        graph = self._current_graph()
+        if not isinstance(signal_name, str) or graph is None:
+            return
+        enabled = item.checkState(0) == Qt.CheckState.Checked
+        existing = next(
+            (trace for trace in graph.traces if trace.name == signal_name), None
+        )
+        if enabled and existing is None:
+            graph.traces.append(SimulationTrace(name=signal_name))
+        elif not enabled and existing is not None:
+            graph.traces.remove(existing)
+        page = self.ui.graphTabs.currentWidget()
+        if isinstance(page, GraphWorkspacePage):
+            page.refresh_chart()
+
+    def selected_signal_names(self) -> list[str]:
+        """Return full column names selected for future plotting actions."""
+
+        names = []
+        for item in self.ui.signalsTree.selectedItems():
+            name = item.data(0, Qt.ItemDataRole.UserRole)
+            if isinstance(name, str):
+                names.append(name)
+        return names
+
+    def show_signal_context_menu(self, position) -> None:
+        item = self.ui.signalsTree.itemAt(position)
+        signal_name = (
+            item.data(0, Qt.ItemDataRole.UserRole) if item is not None else None
+        )
+        graph = self._current_graph()
+        if not isinstance(signal_name, str) or graph is None:
+            return
+        menu = QMenu(self)
+        use_as_x_action = menu.addAction("Use as X Axis")
+        use_as_x_action.setCheckable(True)
+        use_as_x_action.setChecked(graph.x_axis == signal_name)
+        selected = menu.exec(
+            self.ui.signalsTree.viewport().mapToGlobal(position)
+        )
+        if selected is use_as_x_action:
+            self.set_x_axis_signal(signal_name)
+
+    def set_x_axis_signal(self, signal_name: str) -> None:
+        """Set the current graph's persisted horizontal data column."""
+
+        graph = self._current_graph()
+        if graph is None or signal_name not in self.results.data:
+            return
+        graph.x_axis = signal_name
+        page = self.ui.graphTabs.currentWidget()
+        if isinstance(page, GraphWorkspacePage):
+            page.refresh_chart()
 
     def open_results(self) -> None:
         file_name, _selected_filter = QFileDialog.getOpenFileName(
@@ -261,6 +469,65 @@ class SimulationWindow(QMainWindow):
         return self._running
 
 
+class GraphWorkspacePage(QWidget):
+    """Matplotlib view of one persisted simulation graph definition."""
+
+    def __init__(
+        self, graph: SimulationGraph, results: SimulationResults, parent=None
+    ) -> None:
+        super().__init__(parent)
+        self.graph_id = graph.id
+        self.graph = graph
+        self.results = results
+        self.plot_layout = QVBoxLayout(self)
+        self.figure = Figure(layout="constrained")
+        self.canvas = FigureCanvasQTAgg(self.figure)
+        self.axes = self.figure.add_subplot(111)
+        self.navigation_toolbar = NavigationToolbar2QT(self.canvas, self)
+        self.plot_layout.addWidget(self.navigation_toolbar)
+        self.plot_layout.addWidget(self.canvas)
+        self.refresh_chart()
+
+    def refresh_chart(self) -> None:
+        self.axes.clear()
+        x_values = self.results.data.get(self.graph.x_axis)
+        for trace in self.graph.traces:
+            y_values = self.results.data.get(trace.name)
+            if y_values is None:
+                continue
+            horizontal = x_values if x_values is not None else range(len(y_values))
+            sample_count = min(len(horizontal), len(y_values))
+            color = trace.properties.get("color")
+            self.axes.plot(
+                list(horizontal)[:sample_count],
+                y_values[:sample_count],
+                label=trace.name,
+                color=color if isinstance(color, str) and color else None,
+            )
+        self.axes.set_title(self.graph.title)
+        self.axes.set_xlabel(self.graph.x_axis if x_values is not None else "sample")
+        self.axes.grid(True, alpha=0.25)
+        if self.axes.lines:
+            self.axes.legend()
+        self.canvas.draw_idle()
+
+
 def _safe_file_stem(model_name: str) -> str:
     stem = re.sub(r"[^A-Za-z0-9_.-]+", "_", model_name).strip("._")
     return stem or "simulation"
+
+
+def _signal_tree_parts(signal_name: str) -> tuple[str, ...]:
+    """Split dots and array indices into display hierarchy segments."""
+
+    parts: list[str] = []
+    for segment in signal_name.split("."):
+        if not segment:
+            continue
+        match = re.fullmatch(r"([^\[]+)((?:\[[^\]]+\])+)", segment)
+        if match is None:
+            parts.append(segment)
+            continue
+        parts.append(match.group(1))
+        parts.extend(re.findall(r"\[([^\]]+)\]", match.group(2)))
+    return tuple(parts)
diff --git a/BEdit/ui/simulation_window.ui b/BEdit/ui/simulation_window.ui
index 8f4dc70..816d9b7 100644
--- a/BEdit/ui/simulation_window.ui
+++ b/BEdit/ui/simulation_window.ui
@@ -20,12 +20,12 @@
   <widget class="QWidget" name="centralWidget">
    <layout class="QVBoxLayout" name="resultsLayout">
     <item>
-     <widget class="QLabel" name="resultsPlaceholder">
-      <property name="text">
-       <string>Simulation graphs and result controls can be added here.</string>
+     <widget class="QTabWidget" name="graphTabs">
+      <property name="tabsClosable">
+       <bool>false</bool>
       </property>
-      <property name="alignment">
-       <set>Qt::AlignmentFlag::AlignCenter</set>
+      <property name="movable">
+       <bool>true</bool>
       </property>
      </widget>
     </item>
@@ -76,10 +76,34 @@
     <addaction name="actionAbout"/>
     <addaction name="actionAboutQt"/>
    </widget>
+   <widget class="QMenu" name="menuGraph">
+    <property name="title">
+     <string>&amp;Graph</string>
+    </property>
+    <addaction name="actionAddGraph"/>
+    <addaction name="actionRemoveGraph"/>
+   </widget>
    <addaction name="menuFile"/>
    <addaction name="menuView"/>
+   <addaction name="menuGraph"/>
    <addaction name="menuHelp"/>
   </widget>
+  <widget class="QToolBar" name="workspaceToolbar">
+   <property name="windowTitle">
+    <string>Workspace</string>
+   </property>
+   <property name="toolButtonStyle">
+    <enum>Qt::ToolButtonStyle::ToolButtonIconOnly</enum>
+   </property>
+   <attribute name="toolBarArea">
+    <enum>TopToolBarArea</enum>
+   </attribute>
+   <attribute name="toolBarBreak">
+    <bool>false</bool>
+   </attribute>
+   <addaction name="actionAddGraph"/>
+   <addaction name="actionRemoveGraph"/>
+  </widget>
   <widget class="QToolBar" name="fileToolbar">
    <property name="windowTitle">
     <string>File</string>
@@ -93,10 +117,10 @@
    <attribute name="toolBarBreak">
     <bool>false</bool>
    </attribute>
+   <addaction name="actionClear"/>
    <addaction name="actionOpen"/>
    <addaction name="actionSave"/>
    <addaction name="actionSaveAs"/>
-   <addaction name="actionClear"/>
   </widget>
   <widget class="QDockWidget" name="statusDock">
    <property name="windowTitle">
@@ -162,6 +186,36 @@
     </layout>
    </widget>
   </widget>
+  <widget class="QDockWidget" name="signalsDock">
+   <property name="windowTitle">
+    <string>Signals</string>
+   </property>
+   <attribute name="dockWidgetArea">
+    <number>2</number>
+   </attribute>
+   <widget class="QWidget" name="signalsDockContents">
+    <layout class="QVBoxLayout" name="signalsLayout">
+     <item>
+      <widget class="QTreeWidget" name="signalsTree">
+       <property name="contextMenuPolicy">
+        <enum>Qt::ContextMenuPolicy::CustomContextMenu</enum>
+       </property>
+       <property name="selectionMode">
+        <enum>QAbstractItemView::SelectionMode::ExtendedSelection</enum>
+       </property>
+       <property name="headerHidden">
+        <bool>true</bool>
+       </property>
+       <column>
+        <property name="text">
+         <string>Signal</string>
+        </property>
+       </column>
+      </widget>
+     </item>
+    </layout>
+   </widget>
+  </widget>
   <action name="actionOpen">
    <property name="icon">
     <iconset resource="../resources/resources.qrc">
@@ -236,6 +290,30 @@
     <string>Results</string>
    </property>
   </action>
+  <action name="actionAddGraph">
+   <property name="icon">
+    <iconset resource="../resources/resources.qrc">
+     <normaloff>:/icons/icons/list-add.png</normaloff>:/icons/icons/list-add.png</iconset>
+   </property>
+   <property name="text">
+    <string>Add Graph</string>
+   </property>
+   <property name="statusTip">
+    <string>Add a graph workspace tab</string>
+   </property>
+  </action>
+  <action name="actionRemoveGraph">
+   <property name="icon">
+    <iconset resource="../resources/resources.qrc">
+     <normaloff>:/icons/icons/list-remove.png</normaloff>:/icons/icons/list-remove.png</iconset>
+   </property>
+   <property name="text">
+    <string>Remove Current Graph</string>
+   </property>
+   <property name="statusTip">
+    <string>Remove the current graph workspace tab</string>
+   </property>
+  </action>
  </widget>
  <resources>
   <include location="../resources/resources.qrc"/>