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uid: input-system-supported-ui-sys
---

# Supported UI systems

Choose how the Input System works with Unity's UI stacks—UI Toolkit, uGUI, and IMGUI.

Compare compatibility by Unity version, add a [UI Input Module](using-ui-input-module.md) where required, or keep IMGUI on legacy input while the rest of your project uses the Input System.

| **Topic** | **Description** |
| :--- | :--- |
| **[Understand UI system compatibility](understand-ui-compatibility.md)** | See which UI stacks need the UI Input Module and how support varies by Unity version. |
| **[Using UI Input Module for UI support](using-ui-input-module.md)** | Add UI Input Module to your scene and wire Input System actions to uGUI or older UI Toolkit. |
| **[Use IMGUI alongside the Input System package](use-imgui-alongside-input-system.md)** | Use legacy Input Manager input for IMGUI while gameplay uses the Input System. |

## Additional resources

- [Configure UI Input Actions](configure-ui-input-action-map.md)
- [Default UI Action Map reference](ui-action-map-reference.md)
- [Handling input target ambiguity](handling-input-target-ambiguity.md)
- [Use a Virtual Mouse for UI cursor control](virtual-mouse-ui-cursor-control.md)