# Buz

7 Hacker News commenters recommended Buz and 6 criticized it, November 2025 to November 2026. It was recommended in 1 of 13 months.

**Verdict:** A free fork of the Bun JavaScript runtime rewritten in Zig, which people praise for sub-second incremental builds, though critics doubt the claims and maintenance over time.

## Why people recommend it

- Very fast incremental builds (3 comments): "The fact that a one-man team achieved 1s build times proves pretty conclusively" ([source](https://news.ycombinator.com/item?id=49034946)) "90 seconds to less than 1 second. That's astonishing" ([source](https://news.ycombinator.com/item?id=49035319)) "That's step 1 and a massive win." ([source](https://news.ycombinator.com/item?id=49036591))
- Well-run fork with code quality (2 comments): "Bun, but managed by someone who values code quality? Sign me up." ([source](https://news.ycombinator.com/item?id=49033949)) "they're working to reduce the unsafe code over time" ([source](https://news.ycombinator.com/item?id=49053294))

## What people warn about

- Claims lack backing and evidence (3 comments): "It's insane to make that kind of claim without backing it up." ([source](https://news.ycombinator.com/item?id=49357535)) "their stated motivation and reported results are kinda BS" ([source](https://news.ycombinator.com/item?id=49037662)) "It didn't prevent any bugs." ([source](https://news.ycombinator.com/item?id=49035709))

## Alternatives hackers recommend

- [Bun](https://hackerapproved.com/p/bun.md): 493 recommend
- [Node.js](https://hackerapproved.com/p/node-js.md): 257 recommend
- [Deno](https://hackerapproved.com/p/deno.md): 234 recommend
- [Ant JavaScript runtime](https://hackerapproved.com/p/ant-javascript-runtime.md): 16 recommend
- [workerd](https://hackerapproved.com/p/workerd.md): 13 recommend

## Cite as

Hacker Approved, "Buz", https://hackerapproved.com/p/buz/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).