Horse Browser writes the sidebar to disk as you go. There's no "save" button. Quit, update, crash, restart the laptop, your Trails come back exactly as they were.
How the auto-save works
Every time you open a page, rename a Trail, drag something, or close the browser, the change goes straight to disk. The sidebar is treated like a Notes app, its contents are the saved state, not a session that gets thrown away.
Closing or quitting works the same as any other browser:
- Click X to close the window. Horse keeps running.
- To quit fully: right-click the dock icon and Quit, or Menu > Horse > Quit Horse. Quitting also runs any pending updates.

Reopen Horse afterwards and the sidebar is back where it was.
More
For paranoid backup, the offline backup guide covers exporting your Trails to a file you can keep separately. The import/export guide covers moving them between machines.


