diff --git a/docs/source/changes.md b/docs/source/changes.md
index ec245536..94cdc796 100644
--- a/docs/source/changes.md
+++ b/docs/source/changes.md
@@ -5,6 +5,13 @@ chronological order. Releases follow [semantic versioning](https://semver.org/)
 releases are available on [PyPI](https://pypi.org/project/pytask) and
 [Anaconda.org](https://anaconda.org/conda-forge/pytask).
 
+## 0.5.3 - 2025-xx-xx
+
+- {pull}`650` allows to identify from which data catalog a node is coming from. Thanks
+  to {user}`felixschmitz` for the report! The feature is enabled by adding an
+  `attributes` field on `PNode` and `PProvisionalNode` that will be mandatory on custom
+  nodes in v0.6.0.
+
 ## 0.5.2 - 2024-12-19
 
 - {pull}`633` adds support for Python 3.13 and drops support for 3.8.
diff --git a/docs_src/how_to_guides/writing_custom_nodes_example_3_py310.py b/docs_src/how_to_guides/writing_custom_nodes_example_3_py310.py
index ff01f495..e4d00b2e 100644
--- a/docs_src/how_to_guides/writing_custom_nodes_example_3_py310.py
+++ b/docs_src/how_to_guides/writing_custom_nodes_example_3_py310.py
@@ -15,12 +15,20 @@ class PickleNode:
         Name of the node which makes it identifiable in the DAG.
     path
         The path to the file.
+    attributes
+        Additional attributes that are stored in the node.
 
     """
 
-    def __init__(self, name: str = "", path: Path | None = None) -> None:
+    def __init__(
+        self,
+        name: str = "",
+        path: Path | None = None,
+        attributes: dict[Any, Any] | None = None,
+    ) -> None:
         self.name = name
         self.path = path
+        self.attributes = attributes or {}
 
     @property
     def signature(self) -> str:
diff --git a/docs_src/how_to_guides/writing_custom_nodes_example_3_py38.py b/docs_src/how_to_guides/writing_custom_nodes_example_3_py38.py
index 98281374..d6499a64 100644
--- a/docs_src/how_to_guides/writing_custom_nodes_example_3_py38.py
+++ b/docs_src/how_to_guides/writing_custom_nodes_example_3_py38.py
@@ -16,12 +16,20 @@ class PickleNode:
         Name of the node which makes it identifiable in the DAG.
     path
         The path to the file.
+    attributes
+        Additional attributes that are stored in the node.
 
     """
 
-    def __init__(self, name: str = "", path: Optional[Path] = None) -> None:
+    def __init__(
+        self,
+        name: str = "",
+        path: Optional[Path] = None,
+        attributes: Optional[dict[Any, Any]] = None,
+    ) -> None:
         self.name = name
         self.path = path
+        self.attributes = attributes or {}
 
     @property
     def signature(self) -> str:
diff --git a/pyproject.toml b/pyproject.toml
index 3d5a4638..de9f3d05 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -84,12 +84,6 @@ Tracker = "https://github.com/pytask-dev/pytask/issues"
 [project.scripts]
 pytask = "pytask:cli"
 
-[tool.uv.sources]
-pytask-parallel = { workspace = true }
-
-[tool.uv.workspace]
-members = ["packages/*"]
-
 [tool.uv]
 dev-dependencies = [
     "tox-uv>=1.7.0", "pygraphviz;platform_system=='Linux'",
diff --git a/src/_pytask/click.py b/src/_pytask/click.py
index 6daab734..9b19eb93 100644
--- a/src/_pytask/click.py
+++ b/src/_pytask/click.py
@@ -24,6 +24,7 @@
 
 from _pytask import __version__ as version
 from _pytask.console import console
+from _pytask.console import create_panel_title
 
 if TYPE_CHECKING:
     from collections.abc import Sequence
@@ -109,7 +110,7 @@ def format_help(
         console.print(
             Panel(
                 commands_table,
-                title="[bold #f2f2f2]Commands[/]",
+                title=create_panel_title("Commands"),
                 title_align="left",
                 border_style="grey37",
             )
@@ -244,7 +245,7 @@ def _print_options(group_or_command: Command | DefaultGroup, ctx: Context) -> No
     console.print(
         Panel(
             options_table,
-            title="[bold #f2f2f2]Options[/]",
+            title=create_panel_title("Options"),
             title_align="left",
             border_style="grey37",
         )
diff --git a/src/_pytask/collect.py b/src/_pytask/collect.py
index f9bc70fd..0df50442 100644
--- a/src/_pytask/collect.py
+++ b/src/_pytask/collect.py
@@ -33,6 +33,7 @@
 from _pytask.node_protocols import PPathNode
 from _pytask.node_protocols import PProvisionalNode
 from _pytask.node_protocols import PTask
+from _pytask.node_protocols import warn_about_upcoming_attributes_field_on_nodes
 from _pytask.nodes import DirectoryNode
 from _pytask.nodes import PathNode
 from _pytask.nodes import PythonNode
@@ -385,6 +386,9 @@ def pytask_collect_node(  # noqa: C901, PLR0912
     """
     node = node_info.value
 
+    if isinstance(node, (PNode, PProvisionalNode)) and not hasattr(node, "attributes"):
+        warn_about_upcoming_attributes_field_on_nodes()
+
     if isinstance(node, DirectoryNode):
         if node.root_dir is None:
             node.root_dir = path
diff --git a/src/_pytask/console.py b/src/_pytask/console.py
index e46838a4..ed932d3f 100644
--- a/src/_pytask/console.py
+++ b/src/_pytask/console.py
@@ -24,6 +24,7 @@
 from rich.theme import Theme
 from rich.tree import Tree
 
+from _pytask.data_catalog_utils import DATA_CATALOG_NAME_FIELD
 from _pytask.node_protocols import PNode
 from _pytask.node_protocols import PPathNode
 from _pytask.node_protocols import PProvisionalNode
@@ -42,6 +43,7 @@
 
 __all__ = [
     "console",
+    "create_panel_title",
     "create_summary_panel",
     "create_url_style_for_path",
     "create_url_style_for_task",
@@ -146,6 +148,11 @@ def format_node_name(
     """Format the name of a node."""
     if isinstance(node, PPathNode):
         if node.name != node.path.as_posix():
+            # For example, any node added to a data catalog has its name set to the key.
+            if data_catalog_name := getattr(node, "attributes", {}).get(
+                DATA_CATALOG_NAME_FIELD
+            ):
+                return Text(f"{data_catalog_name}::{node.name}")
             return Text(node.name)
         name = shorten_path(node.path, paths)
         return Text(name)
@@ -156,6 +163,11 @@ def format_node_name(
             reduced_name = shorten_path(Path(path), paths)
             return Text(f"{reduced_name}::{rest}")
 
+    # Python or other custom nodes that are not PathNodes.
+    if data_catalog_name := getattr(node, "attributes", {}).get(
+        DATA_CATALOG_NAME_FIELD
+    ):
+        return Text(f"{data_catalog_name}::{node.name}")
     return Text(node.name)
 
 
@@ -293,10 +305,15 @@ def create_summary_panel(
 
     return Panel(
         grid,
-        title="[bold #f2f2f2]Summary[/]",
+        title=create_panel_title("Summary"),
         expand=False,
         style="none",
         border_style=outcome_enum.FAIL.style
         if counts[outcome_enum.FAIL]
         else outcome_enum.SUCCESS.style,
     )
+
+
+def create_panel_title(title: str) -> Text:
+    """Create a title for a panel."""
+    return Text(title, style="bold #f2f2f2")
diff --git a/src/_pytask/data_catalog.py b/src/_pytask/data_catalog.py
index 8a9a08cd..ed50a5b1 100644
--- a/src/_pytask/data_catalog.py
+++ b/src/_pytask/data_catalog.py
@@ -17,11 +17,13 @@
 from attrs import field
 
 from _pytask.config_utils import find_project_root_and_config
+from _pytask.data_catalog_utils import DATA_CATALOG_NAME_FIELD
 from _pytask.exceptions import NodeNotCollectedError
 from _pytask.models import NodeInfo
 from _pytask.node_protocols import PNode
 from _pytask.node_protocols import PPathNode
 from _pytask.node_protocols import PProvisionalNode
+from _pytask.node_protocols import warn_about_upcoming_attributes_field_on_nodes
 from _pytask.nodes import PickleNode
 from _pytask.pluginmanager import storage
 from _pytask.session import Session
@@ -92,6 +94,10 @@ def __attrs_post_init__(self) -> None:
         # Initialize the data catalog with persisted nodes from previous runs.
         for path in self.path.glob("*-node.pkl"):
             node = pickle.loads(path.read_bytes())  # noqa: S301
+            if not hasattr(node, "attributes"):
+                warn_about_upcoming_attributes_field_on_nodes()
+            else:
+                node.attributes = {DATA_CATALOG_NAME_FIELD: self.name}
             self._entries[node.name] = node
 
     def __getitem__(self, name: str) -> PNode | PProvisionalNode:
@@ -133,3 +139,9 @@ def add(self, name: str, node: PNode | PProvisionalNode | Any = None) -> None:
                 msg = f"{node!r} cannot be parsed."
                 raise NodeNotCollectedError(msg)
             self._entries[name] = collected_node
+
+        node = self._entries[name]
+        if hasattr(node, "attributes"):
+            node.attributes[DATA_CATALOG_NAME_FIELD] = self.name
+        else:
+            warn_about_upcoming_attributes_field_on_nodes()
diff --git a/src/_pytask/data_catalog_utils.py b/src/_pytask/data_catalog_utils.py
new file mode 100644
index 00000000..1dabc26d
--- /dev/null
+++ b/src/_pytask/data_catalog_utils.py
@@ -0,0 +1,6 @@
+"""Contains utilities for the data catalog."""
+
+__all__ = ["DATA_CATALOG_NAME_FIELD"]
+
+
+DATA_CATALOG_NAME_FIELD = "catalog_name"
diff --git a/src/_pytask/node_protocols.py b/src/_pytask/node_protocols.py
index 6a1d8fc0..56b3ab8f 100644
--- a/src/_pytask/node_protocols.py
+++ b/src/_pytask/node_protocols.py
@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import warnings
 from typing import TYPE_CHECKING
 from typing import Any
 from typing import Callable
@@ -138,3 +139,14 @@ def load(self, is_product: bool = False) -> Any:  # pragma: no cover
 
     def collect(self) -> list[Any]:
         """Collect the objects that are defined by the provisional nodes."""
+
+
+def warn_about_upcoming_attributes_field_on_nodes() -> None:
+    warnings.warn(
+        "PNode and PProvisionalNode will require an 'attributes' field starting "
+        "with pytask v0.6.0. It is a dictionary with any type of key and values "
+        "similar to PTask. See https://tinyurl.com/pytask-custom-nodes for more "
+        "information about adjusting your custom nodes.",
+        stacklevel=1,
+        category=FutureWarning,
+    )
diff --git a/src/_pytask/nodes.py b/src/_pytask/nodes.py
index 3c230a34..75b9a0ee 100644
--- a/src/_pytask/nodes.py
+++ b/src/_pytask/nodes.py
@@ -162,11 +162,14 @@ class PathNode(PPathNode):
         Name of the node which makes it identifiable in the DAG.
     path
         The path to the file.
+    attributes: dict[Any, Any]
+        A dictionary to store additional information of the task.
 
     """
 
     path: Path
     name: str = ""
+    attributes: dict[Any, Any] = field(factory=dict)
 
     @property
     def signature(self) -> str:
@@ -219,6 +222,8 @@ class PythonNode(PNode):
         objects. The function should return either an integer or a string.
     node_info
         The infos acquired while collecting the node.
+    attributes: dict[Any, Any]
+        A dictionary to store additional information of the task.
 
     Examples
     --------
@@ -237,6 +242,7 @@ class PythonNode(PNode):
     value: Any | NoDefault = no_default
     hash: bool | Callable[[Any], int | str] = False
     node_info: NodeInfo | None = None
+    attributes: dict[Any, Any] = field(factory=dict)
 
     @property
     def signature(self) -> str:
@@ -302,11 +308,14 @@ class PickleNode(PPathNode):
         Name of the node which makes it identifiable in the DAG.
     path
         The path to the file.
+    attributes: dict[Any, Any]
+        A dictionary to store additional information of the task.
 
     """
 
     path: Path
     name: str = ""
+    attributes: dict[Any, Any] = field(factory=dict)
 
     @property
     def signature(self) -> str:
@@ -350,12 +359,15 @@ class DirectoryNode(PProvisionalNode):
     root_dir
         The pattern is interpreted relative to the path given by ``root_dir``. If
         ``root_dir = None``, it is the directory where the path is defined.
+    attributes: dict[Any, Any]
+        A dictionary to store additional information of the task.
 
     """
 
     name: str = ""
     pattern: str = "*"
     root_dir: Path | None = None
+    attributes: dict[Any, Any] = field(factory=dict)
 
     @property
     def signature(self) -> str:
diff --git a/src/_pytask/warnings.py b/src/_pytask/warnings.py
index 6701daee..3b2325e8 100644
--- a/src/_pytask/warnings.py
+++ b/src/_pytask/warnings.py
@@ -12,6 +12,7 @@
 from rich.panel import Panel
 
 from _pytask.console import console
+from _pytask.console import create_panel_title
 from _pytask.pluginmanager import hookimpl
 from _pytask.warnings_utils import WarningReport
 from _pytask.warnings_utils import catch_warnings_for_item
@@ -82,7 +83,9 @@ def pytask_log_session_footer(session: Session) -> None:
         """Log warnings at the end of a session."""
         if session.warnings:
             renderable = _WarningsRenderable(session.warnings)
-            panel = Panel(renderable, title="Warnings", style="warning")
+            panel = Panel(
+                renderable, title=create_panel_title("Warnings"), style="warning"
+            )
             console.print(panel)
 
 
diff --git a/tests/test_collect_command.py b/tests/test_collect_command.py
index 0183b1be..1f6a14b9 100644
--- a/tests/test_collect_command.py
+++ b/tests/test_collect_command.py
@@ -517,6 +517,7 @@ def task_example(
 def test_node_protocol_for_custom_nodes_with_paths(runner, tmp_path):
     source = """
     from typing import Annotated
+    from typing import Any
     from pytask import Product
     from pathlib import Path
     from attrs import define
@@ -527,6 +528,7 @@ class PickleFile:
         name: str
         path: Path
         signature: str = "id"
+        attributes: dict[Any, Any] = {}
 
         def state(self):
             return str(self.path.stat().st_mtime)
diff --git a/tests/test_node_protocols.py b/tests/test_node_protocols.py
index dbf627aa..d35fbb3e 100644
--- a/tests/test_node_protocols.py
+++ b/tests/test_node_protocols.py
@@ -13,6 +13,7 @@
 def test_node_protocol_for_custom_nodes(runner, tmp_path):
     source = """
     from typing import Annotated
+    from typing import Any
     from pytask import Product
     from attrs import define
     from pathlib import Path
@@ -22,6 +23,7 @@ class CustomNode:
         name: str
         value: str
         signature: str = "id"
+        attributes: dict[Any, Any] = {}
 
         def state(self):
             return self.value
@@ -43,12 +45,14 @@ def task_example(
     result = runner.invoke(cli, [tmp_path.as_posix()])
     assert result.exit_code == ExitCode.OK
     assert tmp_path.joinpath("out.txt").read_text() == "text"
+    assert "FutureWarning" not in result.output
 
 
 @pytest.mark.end_to_end
 def test_node_protocol_for_custom_nodes_with_paths(runner, tmp_path):
     source = """
     from typing import Annotated
+    from typing import Any
     from pytask import Product
     from pathlib import Path
     from attrs import define
@@ -60,6 +64,7 @@ class PickleFile:
         path: Path
         value: Path
         signature: str = "id"
+        attributes: dict[Any, Any] = {}
 
         def state(self):
             return str(self.path.stat().st_mtime)
@@ -87,3 +92,40 @@ def task_example(
     result = runner.invoke(cli, [tmp_path.as_posix()])
     assert result.exit_code == ExitCode.OK
     assert tmp_path.joinpath("out.txt").read_text() == "text"
+
+
+@pytest.mark.end_to_end
+def test_node_protocol_for_custom_nodes_adding_attributes(runner, tmp_path):
+    source = """
+    from typing import Annotated
+    from pytask import Product
+    from attrs import define
+    from pathlib import Path
+
+    @define
+    class CustomNode:
+        name: str
+        value: str
+        signature: str = "id"
+
+        def state(self):
+            return self.value
+
+        def load(self, is_product):
+            return self.value
+
+        def save(self, value):
+            self.value = value
+
+    def task_example(
+        data = CustomNode("custom", "text"),
+        out: Annotated[Path, Product] = Path("out.txt"),
+    ) -> None:
+        out.write_text(data)
+    """
+    tmp_path.joinpath("task_module.py").write_text(textwrap.dedent(source))
+
+    result = runner.invoke(cli, [tmp_path.as_posix()])
+    assert result.exit_code == ExitCode.OK
+    assert tmp_path.joinpath("out.txt").read_text() == "text"
+    assert "FutureWarning" in result.output