[smt88]

> I've gotten used to undo-tree, and now I find it sorely lacking in literally any software that can "undo".

This feature is built in to all JetBrains IDEs (IntelliJ, WebStorm, PyCharm, etc.), most popular web wikis (Confluence, Notion, etc.), Google's web Office suite, and Microsoft's web office suite. It's available as a plugin for VS Code.

It's also built in to MacOS (Time Machine), Windows (File History), Dropbox, SpiderOak, and Sync, though some of those require it to be enabled and it doesn't work with keyboard shortcuts.

> The interactive insertion and inspection of unicode characters is also nifty.

When does this come in handy?