Source: https://seerepo.com/compare/foundry-rs/foundry/vs/zed-industries/zed
Markdown source: https://seerepo.com/compare/foundry-rs/foundry/vs/zed-industries/zed.md
Description: foundry and zed share 10 technologies: axum, Tokio, tower, dialoguer, rpassword, markdown, schemars, tracing, tracing-subscriber, and tracing-tracy. Both are written in Rust.

# foundry vs zed

foundry and zed share 10 technologies: axum, Tokio, tower, dialoguer, rpassword, markdown, schemars, tracing, tracing-subscriber, and tracing-tracy. Both are written in Rust.

- [foundry-rs/foundry](https://seerepo.com/r/foundry-rs/foundry): Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.
- [zed-industries/zed](https://seerepo.com/r/zed-industries/zed): Code at the speed of thought – Zed is a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.

## What they share and what sets them apart

- In common: axum, Tokio, tower, dialoguer, rpassword, markdown, schemars, tracing, tracing-subscriber, tracing-tracy
- Only in foundry: alloy-trie, anstyle, comfy-table, indicatif, crossterm, Ratatui, hkdf
- Only in zed: aws-sdk-s3, db, sqlez, sqlx-postgres, libsqlite3-sys, aws-sdk-kinesis, lru, heed, moka, Postgres, sqlx, AWS S3, GitHub, gpui, gpui_tokio, gpui_web, node_runtime, smol, objc2-foundation, wasmtime, objc2-app-kit, objc2-core-video, tiny_http, core-services, objc2-core-media, theme, theme_settings, font-kit, core-text, swash, command_palette_hooks, component, copilot_ui, git_ui_core, gpui_platform, menu, notifications, open_path_prompt, picker, picker_preview, platform_title_bar, tasks_ui, terminal, terminal_view, title_bar, ui, ui_input, vim_mode_setting, zed_actions, accesskit, wgpu, objc2-quartz-core, objc2-ui-kit, x11rb, core-graphics, etagere, wayland-client, alacritty_terminal, taffy, xkbcommon, accesskit_unix, objc2-metal, wayland-protocols-plasma, console, cosmic-text, lyon_path, notify-rust, objc2-user-notifications, wayland-cursor, file_icons, icons, emojis, sea-orm-macros, sqlez_macros, sea-orm, credentials_provider, oauth_callback_server, zed_credentials_provider, jsonwebtoken, acp_thread, agent, agent_servers, agent_skills, agent_ui, ai_onboarding, cloud_llm_client, codestral, context_server, copilot_chat, edit_prediction, edit_prediction_context, edit_prediction_types, harbor, language_model, language_model_core, language_models, ollama, open_ai, prompt_store, zeta_prompt, agent-client-protocol, aws-sdk-bedrockruntime, html_to_markdown, markdown_preview, image, quick-xml, pulldown-cmark, html5ever, tree-sitter-md, usvg, linkify, handlebars, mdbook, objc2-core-text, plist, resvg, ttf-parser, yaml-rust2, jsonschema, zlog, ztracing, log, env_logger, simplelog, perf-event, prometheus, tracy-client

## Side by side

| | foundry | zed |
|---|---|---|
| Size | 613,747 lines written, 714 code files | 1,852,865 lines written, 1,779 code files |
| Who writes it | 4% of its commits signed by AI. With Amp, Claude Code, Cursor, and GitHub Copilot | 0.5% of its commits signed by AI. With Claude Code, Amp, Factory, GitHub Copilot, Codex, and Cursor |
| Activity | Last push November 13, 2026, 9,510 commits, 10,772 stars | Last push November 12, 2026, 37,638 commits, 94,758 stars |
| Tests | 251 test files. 14.6% of its code files have a test that imports them | 140 test files. 18.4% 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, foundry or zed?

zed, with 1,852,865 lines written; foundry has 613,747.

The proof: [zed-industries/zed's code at commit 8a5cf7e](https://github.com/zed-industries/zed/tree/8a5cf7e23a7ce5797bb020a4b7be2ef1b7dc8f79)

### Which has more GitHub stars, foundry or zed?

zed, with 94,758 stars; foundry has 10,772.

The proof: [zed-industries/zed on GitHub](https://github.com/zed-industries/zed)

### Which has more tests, foundry or zed?

foundry, with 251 test files; zed has 140.

The proof: [foundry-rs/foundry's code at commit b59c7b3](https://github.com/foundry-rs/foundry/tree/b59c7b37745178b4201e261e1bc6b911133aa1ea)

### Which was updated more recently, foundry or zed?

foundry: its last push was on November 13, 2026, and zed's on November 12, 2026.

The proof: [foundry-rs/foundry's commits on GitHub](https://github.com/foundry-rs/foundry/commits)

### Which has more commits signed by AI, foundry or zed?

foundry: an AI signed 4% of its commits, with Amp, Claude Code, Cursor, and GitHub Copilot; in zed, 0.5%.

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

## Sources

- foundry-rs/foundry: Read on November 13, 2026, at commit b59c7b3 (https://github.com/foundry-rs/foundry/tree/b59c7b37745178b4201e261e1bc6b911133aa1ea)
- zed-industries/zed: Read on November 12, 2026, at commit 8a5cf7e (https://github.com/zed-industries/zed/tree/8a5cf7e23a7ce5797bb020a4b7be2ef1b7dc8f79)

## 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.