I've been working on a small project called Krooko because I kept seeing great ideas die simply because people couldn't find the right person to build with.
It's free, there's no catch, and the idea is simple: post what you're building, describe the kind of partner you're looking for, and connect with people who are interested.
Still early, so I'd genuinely love feedback if its good or bad
You can try it here: krooko.vercel.app