Source: https://seerepo.com/compare/jub0t/Concat/vs/zed-industries/zed
Markdown source: https://seerepo.com/compare/jub0t/Concat/vs/zed-industries/zed.md
Description: Concat and zed share 13 technologies: objc2-app-kit, objc2-foundation, Tokio, wgpu, objc2-metal, objc2-quartz-core, lyon_path, wayland-client, image, resvg, ttf-parser, schemars, and log. Both are written in Rust.

# Concat vs zed

Concat and zed share 13 technologies: objc2-app-kit, objc2-foundation, Tokio, wgpu, objc2-metal, objc2-quartz-core, lyon_path, wayland-client, image, resvg, ttf-parser, schemars, and log. Both are written in Rust.

- [jub0t/Concat](https://seerepo.com/r/jub0t/Concat): Beta: The truly free, open-source, local-first, cross-platform video editor. Scriptable through a JSON-RPC API & MCP.
- [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: objc2-app-kit, objc2-foundation, Tokio, wgpu, objc2-metal, objc2-quartz-core, lyon_path, wayland-client, image, resvg, ttf-parser, schemars, log
- Only in Concat: Jetpack Compose, clru, core-ktx, fontdb, write-fonts, i-slint-core-macros, wgpu-hal, Slint, skia-safe, i-slint-core, tiny-skia, glow, glutin, i-slint-common, rfd, softbuffer, ort, tokenizers, whisper-rs, png, read-fonts, rustybuzz, android_logger
- Only in zed: axum, tower, 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, wasmtime, 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, objc2-ui-kit, x11rb, core-graphics, etagere, alacritty_terminal, taffy, xkbcommon, accesskit_unix, wayland-protocols-plasma, console, cosmic-text, dialoguer, 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, rpassword, 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, markdown_preview, quick-xml, pulldown-cmark, html5ever, tree-sitter-md, usvg, linkify, handlebars, mdbook, objc2-core-text, plist, yaml-rust2, jsonschema, zlog, ztracing, tracing, env_logger, tracing-subscriber, simplelog, perf-event, prometheus, tracing-tracy, tracy-client

## Side by side

| | Concat | zed |
|---|---|---|
| Size | 165,559 lines written, 221 code files | 1,852,865 lines written, 1,779 code files |
| Who writes it | 66.1% of its commits signed by AI. With Claude Code, Cursor, and Codex | 0.5% of its commits signed by AI. With Claude Code, Amp, Factory, GitHub Copilot, Codex, and Cursor |
| Activity | Last push November 8, 2026, 1,280 commits, 15,408 stars | Last push November 12, 2026, 37,638 commits, 94,758 stars |
| Tests | 6 test files. 6.8% 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, Concat or zed?

zed, with 1,852,865 lines written; Concat has 165,559.

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

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

zed, with 94,758 stars; Concat has 15,408.

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

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

zed, with 140 test files; Concat has 6.

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

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

zed: its last push was on November 12, 2026, and Concat's on November 8, 2026.

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

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

Concat: an AI signed 66.1% of its commits, with Claude Code, Cursor, and Codex; in zed, 0.5%.

The proof: [the commits each tool signed in jub0t/Concat](https://seerepo.com/r/jub0t/Concat/ai)

## Sources

- jub0t/Concat: Read on November 8, 2026, at commit c6be3e0 (https://github.com/jub0t/Concat/tree/c6be3e05493759b9329de01bda27b4686bf1efa0)
- 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.