wazero
Ranked 4 of 5 webassembly runtimes by recommenders
Pure Go WebAssembly runtime that people embed to run sandboxed plugins, with a well-regarded compiler and long-standing context cancellation support.
Pure Go WebAssembly runtime that people embed to run sandboxed plugins, with a well-regarded compiler and long-standing context cancellation support.
8 people gave an opinion
- recommend it
- 7
- criticize it
- 1
- approval share
- 88%
Recommended in 5 of 13 months
- November 2025: not recommended
- December 2025: recommended
- January 2026: not recommended
- February 2026: recommended
- March 2026: not recommended
- April 2026: recommended
- May 2026: recommended
- June 2026: not recommended
- July 2026: not recommended
- August 2026: 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.
- 7 recommenders for every criticNeeds 2 to 1 or better, met.
- Recommended in 5 of 13 monthsNeeds 4 or more, 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
Used for sandboxed plugin systems
“We're using TinyGo and the Wazero runtime for our WASM plugin system in ServiceRadar”
Comment from 3 Apr 2026 in “Go on Embedded Systems and WebAssembly” “I think these uses of the Wasm sandbox show a lot of promise!”
Comment from 30 Aug 2026 in “monty-go: Pure-Go wrapper for Pydantic's Monty Python Interpreter” Mature runtime with good compiler
“wazero has supported context cancellation for a long time”
Comment from 9 Dec 2025 in “Epsilon: A WASM virtual machine written in Go” “the wazero compiler is pretty good”
Comment from 29 Apr 2026 in “WASM is not quite a stack machine” Cleanly packaged in shipped products
“nicely packaged with wazero (pure Go WASM runtime)”
Comment from 26 Feb 2026 in “Show HN: I ported Tree-sitter to Go” “The single binary, heterogeneous story would have fallen flat on it's face if it wasn't for the brill work you lot are doing”
Comment from 2 May 2026 in “Show HN: Pollen – distributed WASM runtime, no control plane, single binary”
Other webassembly runtimes people recommend
The four most recommended other webassembly 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 |
|---|---|---|---|---|---|---|
| Wasmtime | 16 | 4 | 80% | 7 | — | Approved |
| Pollen WASM runtime | 10 | 0 | 100% | 1 | — | — |
| Pollen | 8 | 2 | 80% | 3 | — | — |
| wazeroThis page | 7 | 1 | 88% | 5 | — | — |
| Popcorn | 5 | 0 | 100% | 2 | — | — |
What people said
7 of the 10 comments that mention it, newest first. Each links to the original comment.
“I think these uses of the Wasm sandbox show a lot of promise!”
“The single binary, heterogeneous story would have fallen flat on it's face if it wasn't for the brill work you lot are doing”
“the wazero compiler is pretty good”
“BigGo failed me on websocket conns on both wasmtime and wazero (connects and gets into an inf loop on reply)”
“We're using TinyGo and the Wazero runtime for our WASM plugin system in ServiceRadar”
“nicely packaged with wazero (pure Go WASM runtime)”
“wazero has supported context cancellation for a long time”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.