There’s a useful and unique new UserScript. In search results, always redirect the links on Twitter hits to Nitter. Useful if you’re not a Twitter user, but may occasionally want to peek at a perhaps-useful Twitter hit in search.
If the main Nitter is being “rate limited” by Twitter, there’s another script that’s a Nitter Instance Switcher and offers a link to a random mirror site.
A full Instance (mirror) list is here at GitHub, if you need to find a few fresh ones.