Source: https://seerepo.com/compare/langflow-ai/langflow/vs/Stirling-Tools/Stirling-PDF
Markdown source: https://seerepo.com/compare/langflow-ai/langflow/vs/Stirling-Tools/Stirling-PDF.md
Description: langflow and Stirling-PDF share 3 technologies: React, Vite, and FastAPI. langflow is written in Python and Stirling-PDF in TypeScript. Side by side: stack, size, who writes it, activity and tests.

# langflow vs Stirling-PDF

langflow and Stirling-PDF share 3 technologies: React, Vite, and FastAPI. langflow is written in Python and Stirling-PDF in TypeScript.

- [langflow-ai/langflow](https://seerepo.com/r/langflow-ai/langflow/built): Langflow is a powerful tool for building and deploying AI-powered agents and workflows.
- [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

## Side by side

| | langflow | Stirling-PDF |
|---|---|---|
| Stack | Python: React, Vite, FastAPI, Redis, OpenAI | TypeScript: React, Vite, FastAPI, Spring, Supabase, Postgres, Stripe, AWS S3, PostHog |
| Size | 1,438,179 lines written, 4,003 code files | 1,143,405 lines written, 4,342 code files |
| Who writes it | 1.5% of its commits signed by AI. With Claude Code, CodeRabbit, GitHub Copilot, Cursor, Codex, and Warp | 2.1% of its commits signed by AI. With GitHub Copilot, Claude Code, and Codex |
| Activity | Last push October 27, 2026, 17,563 commits, 156,046 stars | Last push October 27, 2026, 5,679 commits, 95,111 stars |
| Tests | 3,061 test files. 34.4% of its code files have a test that imports them | 2,064 test files. 48.8% of its code files have a test that imports them |

## What they share and what sets them apart

- In common: React, Vite, FastAPI
- Only in langflow: Redis, OpenAI
- Only in Stirling-PDF: Spring, Supabase, Postgres, Stripe, AWS S3, PostHog

## Sources

- langflow-ai/langflow: Read on October 27, 2026, at commit aeb10d9 (https://github.com/langflow-ai/langflow/tree/aeb10d96bb2ea797696613af931e91ddf51f3320)
- Stirling-Tools/Stirling-PDF: Read on October 27, 2026, at commit cd48ccb (https://github.com/Stirling-Tools/Stirling-PDF/tree/cd48ccb288f66ff884cbb084bf101b875ed7ded7)