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OpenSpec vs react

OpenSpec and react share 3 technologies: Tailwind CSS, ora, and Zod. OpenSpec is written in TypeScript and react in JavaScript.

Read it as markdown

What they share and what sets them apart

Fission-AI

OpenSpec

Spec-driven development (SDD) for AI coding assistants.

TypeScript74kRead on November 5, 2026, at commit 3e4d5f0What is OpenSpec built with?

Only in OpenSpec

In common

react

react

The library for web and native user interfaces.

JavaScript251.9kRead on November 4, 2026, at commit 76baa3bWhat is react built with?

Only in react

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
OpenSpec144,693 lines written218 code files
react833,946 lines written1,570 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.
OpenSpec28.9% of its commits signed by AIWith Claude Code, Codex, CodeRabbit, Cursor, Mistral Vibe, GitHub Copilot, Qwen Code, and Crush
react0.2% of its commits signed by AIWith Claude Code, Cursor, Codex, and Amp
ActivityFrom GitHub and its history, on the day SeeRepo read it.
OpenSpecLast push November 4, 2026967 commits73,952 stars
reactLast push October 31, 202619,152 commits251,911 stars
TestsThe files that test the code, and the share of code files a test imports.
OpenSpec245 test files74.3% of its code files have a test that imports them
react2,826 test files11.1% of its code files have a test that imports them

Frequently asked questions

Which is bigger, OpenSpec or react?
react, with 833,946 lines written; OpenSpec has 144,693.

The proof: react/react's code at commit 76baa3b

Which has more GitHub stars, OpenSpec or react?
react, with 251,911 stars; OpenSpec has 73,952.

The proof: react/react on GitHub

Which has more tests, OpenSpec or react?
react, with 2,826 test files; OpenSpec has 245.

The proof: react/react's code at commit 76baa3b

Which was updated more recently, OpenSpec or react?
OpenSpec: its last push was on November 4, 2026, and react's on October 31, 2026.

The proof: Fission-AI/OpenSpec's commits on GitHub

Which has more commits signed by AI, OpenSpec or react?
OpenSpec: an AI signed 28.9% of its commits, with Claude Code, Codex, CodeRabbit, Cursor, Mistral Vibe, GitHub Copilot, Qwen Code, and Crush; in react, 0.2%.

The proof: the commits each tool signed in Fission-AI/OpenSpec

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