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Stirling-PDF vs cua
Stirling-PDF and cua share 5 technologies: React, Vite, FastAPI, Postgres, and PostHog. Stirling-PDF is written in TypeScript and cua in Rust.
What they share and what sets them apart
Stirling-Tools
Stirling-PDF
#1 PDF Application on GitHub that lets you edit PDFs on any device anywhere
TypeScript95.3kRead on October 29, 2026, at commit 025f763What is Stirling-PDF built with?trycua
cua
Scale computer-use 2.0 with open-source drivers, cross-OS sandboxes, and benchmarks for training, evaluation, and data generation.
Rust31.5kRead on November 2, 2026, at commit e6a88bfWhat is cua built with?In common
Only in Stirling-PDF
Only in cua
Side by side
Stirling-PDFcua
SizeLines written by people and agents, without generated ones; code files, without tests.
Stirling-PDF1,123,883 lines written4,330 code files
cua2,541,798 lines written3,520 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.
Stirling-PDF2.1% of its commits signed by AIWith GitHub Copilot, Claude Code, and Codex
cua27.8% of its commits signed by AIWith Claude Code, Codex, GitHub Copilot, CodeRabbit, Factory, and Cursor
ActivityFrom GitHub and its history, on the day SeeRepo read it.
Stirling-PDFLast push October 29, 20265,704 commits95,347 stars
cuaLast push November 2, 20265,587 commits31,513 stars
TestsThe files that test the code, and the share of code files a test imports.
Stirling-PDF2,034 test files48.5% of its code files have a test that imports them
cua1,988 test files26.8% of its code files have a test that imports them
Frequently asked questions
Which is bigger, Stirling-PDF or cua?
cua, with 2,541,798 lines written in 3,520 code files; Stirling-PDF has 1,123,883 in 4,330.
The proof: trycua/cua's code at commit e6a88bf
Which has more GitHub stars, Stirling-PDF or cua?
Stirling-PDF, with 95,347 stars; cua has 31,513.
The proof: Stirling-Tools/Stirling-PDF on GitHub
Which has more tests, Stirling-PDF or cua?
Stirling-PDF, with 2,034 test files; cua has 1,988.
The proof: Stirling-Tools/Stirling-PDF's code at commit 025f763
Which was updated more recently, Stirling-PDF or cua?
cua: its last push was on November 2, 2026, and Stirling-PDF's on October 29, 2026.
The proof: trycua/cua's commits on GitHub
Which has more commits signed by AI, Stirling-PDF or cua?
cua: an AI signed 27.8% of its commits, with Claude Code, Codex, GitHub Copilot, CodeRabbit, Factory, and Cursor; in Stirling-PDF, 2.1%.
The proof: the commits each tool signed in trycua/cua
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