Source: https://seerepo.com/compare/bytecodealliance/wasmtime/vs/denoland/deno
Markdown source: https://seerepo.com/compare/bytecodealliance/wasmtime/vs/denoland/deno.md
Description: wasmtime and deno share 5 technologies: Tokio, log, tracing, env_logger, and tracing-subscriber. Both are written in Rust.

# wasmtime vs deno

wasmtime and deno share 5 technologies: Tokio, log, tracing, env_logger, and tracing-subscriber. Both are written in Rust.

- [bytecodealliance/wasmtime](https://seerepo.com/r/bytecodealliance/wasmtime): A lightweight WebAssembly runtime that is fast, secure, and standards-compliant
- [denoland/deno](https://seerepo.com/r/denoland/deno): A modern runtime for JavaScript and TypeScript.

## What they share and what sets them apart

- In common: Tokio, log, tracing, env_logger, tracing-subscriber
- Only in wasmtime: wasmtime, ort
- Only in deno: React, rusqlite, SQLite, tower, wgpu, crossterm, ed25519-dalek, hmac, keyring, argon2, hkdf, image, zip, plist, opentelemetry, tracing-opentelemetry

## Side by side

| | wasmtime | deno |
|---|---|---|
| Size | 829,462 lines written, 1,588 code files | 1,217,015 lines written, 1,355 code files |
| Who writes it | 0.1% of its commits signed by AI. With Claude Code and Gemini CLI | 2.4% of its commits signed by AI. With Claude Code, GitHub Copilot, Cursor, and Codex |
| Activity | Last push November 6, 2026, 16,773 commits, 18,832 stars | Last push October 29, 2026, 17,392 commits, 108,801 stars |
| Tests | 422 test files. 4.2% of its code files have a test that imports them | 4,394 test files. 6.1% 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, wasmtime or deno?

deno, with 1,217,015 lines written; wasmtime has 829,462.

The proof: [denoland/deno's code at commit e7b39eb](https://github.com/denoland/deno/tree/e7b39ebd55c85aaf6a29290c1f5a99e2e21e09dd)

### Which has more GitHub stars, wasmtime or deno?

deno, with 108,801 stars; wasmtime has 18,832.

The proof: [denoland/deno on GitHub](https://github.com/denoland/deno)

### Which has more tests, wasmtime or deno?

deno, with 4,394 test files; wasmtime has 422.

The proof: [denoland/deno's code at commit e7b39eb](https://github.com/denoland/deno/tree/e7b39ebd55c85aaf6a29290c1f5a99e2e21e09dd)

### Which was updated more recently, wasmtime or deno?

wasmtime: its last push was on November 6, 2026, and deno's on October 29, 2026.

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

### Which has more commits signed by AI, wasmtime or deno?

deno: an AI signed 2.4% of its commits, with Claude Code, GitHub Copilot, Cursor, and Codex; in wasmtime, 0.1%.

The proof: [the commits each tool signed in denoland/deno](https://seerepo.com/r/denoland/deno/ai)

## Sources

- bytecodealliance/wasmtime: Read on November 6, 2026, at commit 0ad712c (https://github.com/bytecodealliance/wasmtime/tree/0ad712ca16a0aeeaefb9440c674ff4c0cd4e127c)
- denoland/deno: Read on November 4, 2026, at commit e7b39eb (https://github.com/denoland/deno/tree/e7b39ebd55c85aaf6a29290c1f5a99e2e21e09dd)

## 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.