You mean one that allows logging in and posting to Twitter aka X, without a significant fee? Not to my knowledge. Lately Elon and co. have been working to make third party clients completely impossible to develop, so it's either use the official app, use the website, or quit Twitter.

If you just want to browse Twitter, I don't know of any options for that either, but keep an eye on Nitter; currently it does not work, but they're apparently working on a way to work around Twitter's latest changes.