Source: https://seerepo.com/compare/astral-sh/uv/vs/wasmerio/wasmer
Markdown source: https://seerepo.com/compare/astral-sh/uv/vs/wasmerio/wasmer.md
Description: uv and wasmer share 6 technologies: Tokio, indicatif, console, schemars, tracing, and tracing-subscriber. Both are written in Rust.

# uv vs wasmer

uv and wasmer share 6 technologies: Tokio, indicatif, console, schemars, tracing, and tracing-subscriber. Both are written in Rust.

- [astral-sh/uv](https://seerepo.com/r/astral-sh/uv): An extremely fast Python package and project manager, written in Rust.
- [wasmerio/wasmer](https://seerepo.com/r/wasmerio/wasmer): 🚀 Fast and lightweight sandboxes for your apps and AI agents

## What they share and what sets them apart

- In common: Tokio, indicatif, console, schemars, tracing, tracing-subscriber
- Only in uv: csv, markdown, resvg
- Only in wasmer: tower, dialoguer, comfy-table, zip, log, console-subscriber

## Side by side

| | uv | wasmer |
|---|---|---|
| Size | 587,245 lines written, 644 code files | 334,322 lines written, 958 code files |
| Who writes it | 1.4% of its commits signed by AI. With Claude Code, Codex, and GitHub Copilot | 0.5% of its commits signed by AI. With Codex, Claude Code, and GitHub Copilot |
| Activity | Last push November 4, 2026, 11,330 commits, 91,537 stars | Last push November 5, 2026, 16,762 commits, 21,221 stars |
| Tests | 161 test files. 7.1% of its code files have a test that imports them | 202 test files. 2.9% of its code files have a test that imports them |

- Size: Lines written by people and agents, without generated ones; code files, without tests.
- Who writes it: A commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
- Activity: From GitHub and its history, on the day SeeRepo read it.
- Tests: The files that test the code, and the share of code files a test imports.

## Frequently asked questions

### Which is bigger, uv or wasmer?

uv, with 587,245 lines written; wasmer has 334,322.

The proof: [astral-sh/uv's code at commit fc6a4c6](https://github.com/astral-sh/uv/tree/fc6a4c6d4ae896a9a7fb7126957550c75ceffc66)

### Which has more GitHub stars, uv or wasmer?

uv, with 91,537 stars; wasmer has 21,221.

The proof: [astral-sh/uv on GitHub](https://github.com/astral-sh/uv)

### Which has more tests, uv or wasmer?

wasmer, with 202 test files; uv has 161.

The proof: [wasmerio/wasmer's code at commit 66ad7a7](https://github.com/wasmerio/wasmer/tree/66ad7a78ec0cb60700b07987ebcd94e4c6a4d575)

### Which was updated more recently, uv or wasmer?

wasmer: its last push was on November 5, 2026, and uv's on November 4, 2026.

The proof: [wasmerio/wasmer's commits on GitHub](https://github.com/wasmerio/wasmer/commits)

### Which has more commits signed by AI, uv or wasmer?

uv: an AI signed 1.4% of its commits, with Claude Code, Codex, and GitHub Copilot; in wasmer, 0.5%.

The proof: [the commits each tool signed in astral-sh/uv](https://seerepo.com/r/astral-sh/uv/ai)

## Sources

- astral-sh/uv: Read on November 4, 2026, at commit fc6a4c6 (https://github.com/astral-sh/uv/tree/fc6a4c6d4ae896a9a7fb7126957550c75ceffc66)
- wasmerio/wasmer: Read on November 5, 2026, at commit 66ad7a7 (https://github.com/wasmerio/wasmer/tree/66ad7a78ec0cb60700b07987ebcd94e4c6a4d575)

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.