Source: https://seerepo.com/compare/CapSoftware/Cap/vs/jub0t/Concat
Markdown source: https://seerepo.com/compare/CapSoftware/Cap/vs/jub0t/Concat.md
Description: Cap and Concat share 10 technologies: Tokio, objc2-app-kit, objc2-foundation, softbuffer, image, resvg, schemars, log, rfd, and objc2-quartz-core. Both are written in Rust.

# Cap vs Concat

Cap and Concat share 10 technologies: Tokio, objc2-app-kit, objc2-foundation, softbuffer, image, resvg, schemars, log, rfd, and objc2-quartz-core. Both are written in Rust.

- [CapSoftware/Cap](https://seerepo.com/r/CapSoftware/Cap): Open source Loom alternative. Beautiful, shareable screen recordings.
- [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.

## What they share and what sets them apart

- In common: Tokio, objc2-app-kit, objc2-foundation, softbuffer, image, resvg, schemars, log, rfd, objc2-quartz-core
- Only in Cap: axum, Vite, React, GitHub, Hono, react-native, Expo, expo-secure-store, Next.js, Redis, @aws-sdk/s3-request-presigner, Sentry, Stripe, MCP, Anthropic, OpenAI, MySQL, Resend, AWS S3, metal, winit, ash, keyring, tracing, tracing-subscriber, tracing-appender, Tailwind CSS, class-variance-authority, tailwind-merge, Radix UI, Lucide, global-hotkey, tray-icon, jose, valibot, Zod, react-native-reanimated, expo-image, react-native-safe-area-context, react-native-svg, expo-glass-effect, react-native-gesture-handler, expo-camera, Shopify, expo-image-picker, expo-document-picker, sonner, motion, Framer, @uidotdev/usehooks, React Hook Form, canvas-confetti, react-tweet, recharts, fortawesome, Drizzle, next-auth, ai, react-markdown, remark-gfm, dompurify, @hookform/resolvers, @effect/opentelemetry, @react-email/components, cmdk, @aws-sdk/credential-providers, Vercel
- Only in Concat: Jetpack Compose, clru, core-ktx, fontdb, write-fonts, i-slint-core-macros, wgpu-hal, Slint, wgpu, skia-safe, i-slint-core, objc2-metal, tiny-skia, glow, glutin, i-slint-common, lyon_path, wayland-client, ort, tokenizers, whisper-rs, png, read-fonts, rustybuzz, ttf-parser, android_logger

## Side by side

| | Cap | Concat |
|---|---|---|
| Size | 1,176,626 lines written, 2,208 code files | 165,559 lines written, 221 code files |
| Who writes it | 7.9% of its commits signed by AI. With Cursor, Codex, Claude Code, CodeRabbit, GitHub Copilot, and Devin | 66.1% of its commits signed by AI. With Claude Code, Cursor, and Codex |
| Activity | Last push November 4, 2026, 10,666 commits, 24,340 stars | Last push November 8, 2026, 1,280 commits, 15,408 stars |
| Tests | 687 test files. 32.3% of its code files have a test that imports them | 6 test files. 6.8% 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, Cap or Concat?

Cap, with 1,176,626 lines written; Concat has 165,559.

The proof: [CapSoftware/Cap's code at commit 81ef0e4](https://github.com/CapSoftware/Cap/tree/81ef0e4bcd950cd7f9cad098e0bcfff5cc1eee8e)

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

Cap, with 24,340 stars; Concat has 15,408.

The proof: [CapSoftware/Cap on GitHub](https://github.com/CapSoftware/Cap)

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

Cap, with 687 test files; Concat has 6.

The proof: [CapSoftware/Cap's code at commit 81ef0e4](https://github.com/CapSoftware/Cap/tree/81ef0e4bcd950cd7f9cad098e0bcfff5cc1eee8e)

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

Concat: its last push was on November 8, 2026, and Cap's on November 4, 2026.

The proof: [jub0t/Concat's commits on GitHub](https://github.com/jub0t/Concat/commits)

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

Concat: an AI signed 66.1% of its commits, with Claude Code, Cursor, and Codex; in Cap, 7.9%.

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

## Sources

- CapSoftware/Cap: Read on November 4, 2026, at commit 81ef0e4 (https://github.com/CapSoftware/Cap/tree/81ef0e4bcd950cd7f9cad098e0bcfff5cc1eee8e)
- jub0t/Concat: Read on November 8, 2026, at commit c6be3e0 (https://github.com/jub0t/Concat/tree/c6be3e05493759b9329de01bda27b4686bf1efa0)

## 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.