Source: https://seerepo.com/compare/Stirling-Tools/Stirling-PDF/vs/yangshun/tech-interview-handbook
Markdown source: https://seerepo.com/compare/Stirling-Tools/Stirling-PDF/vs/yangshun/tech-interview-handbook.md
Description: Stirling-PDF and tech-interview-handbook share 3 technologies: React, Supabase, and Postgres. Both are written in TypeScript. Side by side: stack, size, who writes it, activity and tests.

# Stirling-PDF vs tech-interview-handbook

Stirling-PDF and tech-interview-handbook share 3 technologies: React, Supabase, and Postgres. Both are written in TypeScript.

- [Stirling-Tools/Stirling-PDF](https://seerepo.com/r/Stirling-Tools/Stirling-PDF/built): #1 PDF Application on GitHub that lets you edit PDFs on any device anywhere
- [yangshun/tech-interview-handbook](https://seerepo.com/r/yangshun/tech-interview-handbook/built): Curated coding interview preparation materials for busy software engineers

## Side by side

| | Stirling-PDF | tech-interview-handbook |
|---|---|---|
| Stack | TypeScript: React, Vite, FastAPI, Spring, Supabase, Postgres, Stripe, AWS S3, PostHog | TypeScript: Next.js, React, Supabase, Postgres |
| Size | 1,143,405 lines written, 4,342 code files | 37,657 lines written, 286 code files |
| Who writes it | 2.1% of its commits signed by AI. With GitHub Copilot, Claude Code, and Codex | 0.1% of its commits signed by AI. With Claude Code |
| Activity | Last push October 27, 2026, 5,679 commits, 95,111 stars | Last push August 7, 2026, 1,336 commits, 143,163 stars |
| Tests | 2,064 test files. 48.8% of its code files have a test that imports them | 1 test files |

## What they share and what sets them apart

- In common: React, Supabase, Postgres
- Only in Stirling-PDF: Vite, FastAPI, Spring, Stripe, AWS S3, PostHog
- Only in tech-interview-handbook: Next.js

## Sources

- Stirling-Tools/Stirling-PDF: Read on October 27, 2026, at commit cd48ccb (https://github.com/Stirling-Tools/Stirling-PDF/tree/cd48ccb288f66ff884cbb084bf101b875ed7ded7)
- yangshun/tech-interview-handbook: Read on October 27, 2026, at commit e1d28e8 (https://github.com/yangshun/tech-interview-handbook/tree/e1d28e8886c0b6ff3e50da991ce0e895134ddc59)