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carbon vs Folo

carbon and Folo share 5 technologies: React, js-yaml, @floating-ui/react, motion, and PostCSS. Both are written in TypeScript.

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What they share and what sets them apart

carbon-design-system

carbon

A design system built by IBM

TypeScript9.6kRead on November 14, 2026, at commit fa75d78What is carbon built with?

Only in carbon

In common

RSSNext

Folo

🧡 Folo is the AI RSS Reader

TypeScript39.3kRead on November 14, 2026, at commit 577846bWhat is Folo built with?

Only in Folo

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
carbon525,904 lines written2,016 code files
Folo277,278 lines written2,536 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.
carbon0% of its commits signed by AIWith Claude Code
Folo9.2% of its commits signed by AIWith Claude Code and GitHub Copilot
ActivityFrom GitHub and its history, on the day SeeRepo read it.
carbonLast push November 14, 202614,276 commits9,624 stars
FoloLast push November 10, 20267,394 commits39,290 stars
TestsThe files that test the code, and the share of code files a test imports.
carbon824 test files17.2% of its code files have a test that imports them
Folo271 test files13.1% of its code files have a test that imports them

Frequently asked questions

Which is bigger, carbon or Folo?
carbon, with 525,904 lines written; Folo has 277,278.

The proof: carbon-design-system/carbon's code at commit fa75d78

Which has more GitHub stars, carbon or Folo?
Folo, with 39,290 stars; carbon has 9,624.

The proof: RSSNext/Folo on GitHub

Which has more tests, carbon or Folo?
carbon, with 824 test files; Folo has 271.

The proof: carbon-design-system/carbon's code at commit fa75d78

Which was updated more recently, carbon or Folo?
carbon: its last push was on November 14, 2026, and Folo's on November 10, 2026.

The proof: carbon-design-system/carbon's commits on GitHub

Which has more commits signed by AI, carbon or Folo?
Folo: an AI signed 9.2% of its commits, with Claude Code and GitHub Copilot.

The proof: the commits each tool signed in RSSNext/Folo

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