Source: https://seerepo.com/compare/mem0ai/mem0/vs/Stirling-Tools/Stirling-PDF
Markdown source: https://seerepo.com/compare/mem0ai/mem0/vs/Stirling-Tools/Stirling-PDF.md
Description: mem0 and Stirling-PDF share 5 technologies: FastAPI, Postgres, Supabase, PostHog, and AWS S3. mem0 is written in Python and Stirling-PDF in TypeScript.

# mem0 vs Stirling-PDF

mem0 and Stirling-PDF share 5 technologies: FastAPI, Postgres, Supabase, PostHog, and AWS S3. mem0 is written in Python and Stirling-PDF in TypeScript.

- [mem0ai/mem0](https://seerepo.com/r/mem0ai/mem0): The Memory Layer for AI Agents - Drop-in memory infrastructure for AI agents and apps. Context that persists. Built for production.
- [Stirling-Tools/Stirling-PDF](https://seerepo.com/r/Stirling-Tools/Stirling-PDF): #1 PDF Application on GitHub that lets you edit PDFs on any device anywhere

## What they share and what sets them apart

- In common: FastAPI, Postgres, Supabase, PostHog, AWS S3
- Only in mem0: Redis, MongoDB, OpenAI, Anthropic
- Only in Stirling-PDF: React, Vite, Spring, Stripe

## Side by side

| | mem0 | Stirling-PDF |
|---|---|---|
| Size | 234,363 lines written, 636 code files | 1,143,405 lines written, 4,342 code files |
| Who writes it | 3.6% of its commits signed by AI. With Claude Code and Cursor | 2.1% of its commits signed by AI. With GitHub Copilot, Claude Code, and Codex |
| Activity | Last push October 26, 2026, 2,650 commits, 67,923 stars | Last push October 27, 2026, 5,679 commits, 95,111 stars |
| Tests | 324 test files. 46.2% 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 |

- Size: Lines written by people and agents, without generated ones; code files, without tests.
- Who writes it: A commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
- Activity: From GitHub and its history, on the day SeeRepo read it.
- Tests: The files that test the code, and the share of code files a test imports.

## Frequently asked questions

### Which is bigger, mem0 or Stirling-PDF?

Stirling-PDF, with 1,143,405 lines written in 4,342 code files; mem0 has 234,363 in 636.

The proof: [Stirling-Tools/Stirling-PDF's code at commit cd48ccb](https://github.com/Stirling-Tools/Stirling-PDF/tree/cd48ccb288f66ff884cbb084bf101b875ed7ded7)

### Which has more GitHub stars, mem0 or Stirling-PDF?

Stirling-PDF, with 95,111 stars; mem0 has 67,923.

The proof: [Stirling-Tools/Stirling-PDF on GitHub](https://github.com/Stirling-Tools/Stirling-PDF)

### Which has more tests, mem0 or Stirling-PDF?

Stirling-PDF, with 2,064 test files; mem0 has 324.

The proof: [Stirling-Tools/Stirling-PDF's code at commit cd48ccb](https://github.com/Stirling-Tools/Stirling-PDF/tree/cd48ccb288f66ff884cbb084bf101b875ed7ded7)

### Which was updated more recently, mem0 or Stirling-PDF?

Stirling-PDF: its last push was on October 27, 2026, and mem0's on October 26, 2026.

The proof: [Stirling-Tools/Stirling-PDF's commits on GitHub](https://github.com/Stirling-Tools/Stirling-PDF/commits)

### Which has more commits signed by AI, mem0 or Stirling-PDF?

mem0: an AI signed 3.6% of its commits, with Claude Code and Cursor; in Stirling-PDF, 2.1%.

The proof: [the commits each tool signed in mem0ai/mem0](https://seerepo.com/r/mem0ai/mem0/ai)

## Sources

- mem0ai/mem0: Read on October 27, 2026, at commit 26cdefb (https://github.com/mem0ai/mem0/tree/26cdefb46600c0fa5953c4b5ee5003c125539fc4)
- Stirling-Tools/Stirling-PDF: Read on October 27, 2026, at commit cd48ccb (https://github.com/Stirling-Tools/Stirling-PDF/tree/cd48ccb288f66ff884cbb084bf101b875ed7ded7)

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.