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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.

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What they share and what sets them apart

CapSoftware

Cap

Open source Loom alternative. Beautiful, shareable screen recordings.

Rust24.3kRead on November 4, 2026, at commit 81ef0e4What is Cap built with?

Only in Cap

In common

jub0t

Concat

Beta: The truly free, open-source, local-first, cross-platform video editor. Scriptable through a JSON-RPC API & MCP.

Rust15.4kRead on November 8, 2026, at commit c6be3e0What is Concat built with?

Only in Concat

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
Cap1,176,626 lines written2,208 code files
Concat165,559 lines written221 code files
Who writes itA commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
Cap7.9% of its commits signed by AIWith Cursor, Codex, Claude Code, CodeRabbit, GitHub Copilot, and Devin
Concat66.1% of its commits signed by AIWith Claude Code, Cursor, and Codex
ActivityFrom GitHub and its history, on the day SeeRepo read it.
CapLast push November 4, 202610,666 commits24,340 stars
ConcatLast push November 8, 20261,280 commits15,408 stars
TestsThe files that test the code, and the share of code files a test imports.
Cap687 test files32.3% of its code files have a test that imports them
Concat6 test files6.8% of its code files have a test that imports them

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

Which has more GitHub stars, Cap or Concat?
Cap, with 24,340 stars; Concat has 15,408.

The proof: CapSoftware/Cap on GitHub

Which has more tests, Cap or Concat?
Cap, with 687 test files; Concat has 6.

The proof: CapSoftware/Cap's code at commit 81ef0e4

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

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

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