Speaking as someone who is currently developing a web app with Rust: no, not yet. It's getting there, certainly, but the tools just aren't ready for general use yet and there's still likely to be a lot of change before things stabilize. In particular, tokio is still at 0.1, and many of the web frameworks have yet to move their internals to be based on it. Foundational pieces like serde and diesel have yet to reach 1.0, but are at least usable on the stable version of the compiler now. More bleeding-edge frameworks like Rocket.rs still require nightly though, and will continue to do so until procedural macros are stabilized.