Tower Web is described as 'fast, boilerplate free, web framework for Rust. The goal is to decouple all HTTP concepts from the application logic' and is an app in the Development category. There are five alternatives to Tower Web for Self-Hosted solutions, Mac, Windows and Linux. The best alternative is Actix, which is both free and Open Source. Other great apps like Tower Web are Warp web framework (Free, Open Source), Sauron (Free, Open Source), Rocket web framework (Free, Open Source) and Gotham web framework (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.