# APIs

- [Actions](/develop/apis/actions.md): Creating tool items, GLib.Actions, and keyboard shortcuts
- [Notifications](/develop/apis/notifications.md): Sending Notification Bubbles with GLib.Notification
- [Launchers](/develop/apis/launchers.md): Adding Badges, Progress Bars, and launching Actions
- [State Saving](/develop/apis/state-saving.md)
- [Custom Resources](/develop/apis/gresource.md): Include additional resources with your app like icons or CSS files using GResource
- [Color Scheme](/develop/apis/color-scheme.md): Setting a dark or light style for your app
- [System Settings](/develop/apis/system-settings.md): Deep linking to System Settings