Buz
Shares rank 6 of 9 JavaScript runtimes by recommenders
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.
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.
13 people gave an opinion
- recommend it
- 7
- criticize it
- 6
- approval share
- 54%
Recommended in 1 of 13 months
- November 2025: not recommended
- December 2025: not recommended
- January 2026: not recommended
- February 2026: not recommended
- March 2026: not recommended
- April 2026: not recommended
- May 2026: not recommended
- June 2026: not recommended
- July 2026: recommended
- August 2026: not recommended
- September 2026: not recommended
- October 2026: not recommended
- November 2026: not recommended (month in progress)
Why it doesn’t carry the badge
- 7 people recommend itNeeds 10 or more, not met.
- 1.1 recommenders for every criticNeeds 2 to 1 or better, not met.
- Recommended in 1 of 13 monthsNeeds 4 or more, not met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Very fast incremental builds
“The fact that a one-man team achieved 1s build times proves pretty conclusively”
Comment from 24 Jul 2026 in “Buz – A fork of Bun using modern Zig, with sub-1s incremental builds” “90 seconds to less than 1 second. That's astonishing”
Comment from 24 Jul 2026 in “Buz – A fork of Bun using modern Zig, with sub-1s incremental builds” “That's step 1 and a massive win.”
Comment from 24 Jul 2026 in “Buz – A fork of Bun using modern Zig, with sub-1s incremental builds” Well-run fork with code quality
“Bun, but managed by someone who values code quality? Sign me up.”
Comment from 24 Jul 2026 in “Buz – A fork of Bun using modern Zig, with sub-1s incremental builds” “they're working to reduce the unsafe code over time”
Comment from 26 Jul 2026 in “Buz – A fork of Bun using modern Zig, with sub-1s incremental builds”
What people warn about
Each mark is one comment
Claims lack backing and evidence
“It's insane to make that kind of claim without backing it up.”
Comment from 19 Aug 2026 in “Bun 1.4 Rust rewrite is not looking good” “their stated motivation and reported results are kinda BS”
Comment from 24 Jul 2026 in “Buz – A fork of Bun using modern Zig, with sub-1s incremental builds” “It didn't prevent any bugs.”
Comment from 24 Jul 2026 in “Buz – A fork of Bun using modern Zig, with sub-1s incremental builds”
Other JavaScript runtimes people recommend
The four most recommended other JavaScript runtimes, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
| Product | Recommend | Criticize | Approval | Months | Owned | Badge |
|---|---|---|---|---|---|---|
| Bun | 493 | 608 | 45% | 12 | 2 yrs17 owners | — |
| Node.js | 257 | 241 | 52% | 12 | 10 yrs5 owners | — |
| Deno | 234 | 176 | 57% | 12 | 2 yrs13 owners | — |
| Ant JavaScript runtime | 16 | 17 | 48% | 2 | — | — |
| BuzThis page | 7 | 6 | 54% | 1 | — | — |
What people said
All 13 comments that mention it, newest first. Each links to the original comment.
“It's insane to make that kind of claim without backing it up.”
“they're working to reduce the unsafe code over time”
“their stated motivation and reported results are kinda BS”
“That's step 1 and a massive win.”
“it doesn't yet have a coherent UX unless you're me”
“It didn't prevent any bugs.”
“90 seconds to less than 1 second. That's astonishing”
“The fact that a one-man team achieved 1s build times proves pretty conclusively”
“11K deadcode. How did they end up there?”
“this is approaching diminishing returns and I guarantee that your CURRENT bottleneck is not build times”
“it has proven that Bun could have had fast builds all along”
“without an ecosystem I doubt this person can keep maintaining it long term”
“Bun, but managed by someone who values code quality? Sign me up.”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.