Actix is described as 'web is a small, pragmatic, and extremely fast Rust web framework' and is an app in the Development category. There are five alternatives to Actix for Self-Hosted solutions, Mac, Windows and Linux. The best alternative is Sauron, which is both free and Open Source. Other great apps like Actix are Warp web framework (Free, Open Source), Gotham web framework (Free, Open Source), Rocket web framework (Free, Open Source) and Tower Web (Free, Open Source).
Warp is a super-easy, composable, web server framework for warp speeds. The fundamental building block of warp is the Filter: they can be combined and composed to express rich requirements on requests.