Hoot
Fewer than 5 people recommend it so far, so there's no written verdict. Here is what commenters said.
3recommend
0warn against
Jan 21, 2026first mention
Aug 19, 2026latest mention
Why people recommend it
“does a very good job of running scheme in web assembly”
“It's not only a Scheme compiler but a full Wasm toolchain available as a library.”
Show 2 more
“Hoot, Spritely's Guile-on-Wasm project”
“Hoot is another interesting one”
Caveats and dissent
No one in these comments warned against it.
Often compared with
From the makers not counted in the ranking
“Spritely started Hoot to get Spritely's programs, built on top of Spritely Goblins, to a wider audience”
works on Spritelyon “Scheme Is a Hoot”
“I had Hoot passing more of the benchmarks than Guile itself”
Threads where it came up
- Scheme Is a Hoot 3 mentions
- Hoot: Scheme on WebAssembly 2 mentions
- The WebRacket language is a subset of Racket that compiles to WebAssembly 2 mentions
- Extensible Software in the Age of LLMs 1 mention
- A pure scheme web programming tool 1 mention
- Notes on Writing WASM 1 mention
Data: hoot.json. Quotes are verbatim; the verdict and theme labels are written by a model from these comments, and every clause links to its sources.
All comments 10
“Hoot[2], their Guile Scheme implementation in Wasm”
“does a very good job of running scheme in web assembly”
The OCapN group is actively working on a milestone for 1.0, the first interop target. It's getting close! https://github.com/ocapn/ocapn/milestone/2
“I suppose Hoot was created to make Goblins [0] available to a broader public via wasm”
“Some exist at least: https://spritely.institute/hoot/”
This is not the smallest REPL binary out there but it's far from the largest I've seen. My anecdotal evidence suggests it's somewhere in the middle or maybe smaller than average. We haven't configured our web server to gzip these assets (we should). Gzipped repl.wasm is 339K. This binary hasn't been run through wasm-opt, either. Hoot is primarily an ahead-of-time compiler, not an interpreter, so this REPL demo has a
“It's not only a Scheme compiler but a full Wasm toolchain available as a library.”
“Hoot, Spritely's Guile-on-Wasm project”
“I am using a similar representation of immediates as Hoot and wasm_of_ocaml.”
“Hoot is another interesting one”