ChatGPT has Projects, but I wanted plain folders and a search that finds a chat by any word in it, so I built ConvoRail. You make a folder, file chats into it in two clicks, and search across the chats you’ve opened. You can also export a chat. Folders and the search index stay in your browser; there’s no account and no server.

It’s on Firefox (link above) and the Chrome Web Store.

Honest limits: search only covers chats you’ve opened with it installed, and very long chats can export partly. ChatGPT changed its page this week and broke export; that’s fixed in 1.1.5.

Disclosure: I’m the developer. It’s free, and not open source (yet). Happy to answer anything about permissions or data, and bug reports are very welcome.