Looking at stats on crates.io for a few frameworks

- axum: 100k installs/day

- warp: 25k installs/day

- actix: 15k installs/day

- rocket: 7k installs/day

- tide: 1k installs/day

(For comparison, hyper - the HTTP library that most web frameworks use under the hood - is at 200k/day, many of which are using it for client rather than server functions. So unless there is another not-hyper-based framework out there, then I’d be moderately confident guessing that axum has >50% of the server market)