Even ignoring the reliability and security issues, Github feels like an app from 2008.

Issues aren't a proper project management tool and wikis aren't fit as documentation.

I've completely abandoned Github.

That would be because Github was founded in 2008. Microsoft bought it in 2015 and hasn't done anything apart from restrict and milk.

Unlike sourceforge, how am I suppose to find new stuff when I am rate-limited after a couple of searches?