Built Tabisto, a Chrome extension, in 5 days using Claude Code. Started the same way a lot of the wins in this community start: solving my own problem first. My browser had 300+ tabs, bookmarks I never opened again, tab groups that fell apart within a week.
Wasn't planning past fixing it for myself. Then reviews started coming in. One person said they didn't realize how useful it would be until they actually started using it, now they open it constantly. Another called it the best new tab extension they've tried.
15 reviews in, still 5.0.
It's a free bookmark manager for Chrome, organizes links into named sections right on the new tab. Site's at tabisto.app, or install it from the Chrome Web Store. If you're building something right now just to fix your own workflow, ship it anyway. That's usually when it turns out other people had the same problem.
What have you built for yourself that ended up being useful to other people too?