Source: https://seerepo.com/compare/backnotprop/plannotator/vs/paperclipai/paperclip
Markdown source: https://seerepo.com/compare/backnotprop/plannotator/vs/paperclipai/paperclip.md
Description: plannotator and paperclip share 16 technologies: React, Vite, Anthropic, MCP, Tailwind CSS, Mermaid, dompurify, Lucide, Base UI, motion, Zod, Drizzle, yaml, class-variance-authority, tailwind-merge, and CodeMirror. Both are written in TypeScript.

# plannotator vs paperclip

plannotator and paperclip share 16 technologies: React, Vite, Anthropic, MCP, Tailwind CSS, Mermaid, dompurify, Lucide, Base UI, motion, Zod, Drizzle, yaml, class-variance-authority, tailwind-merge, and CodeMirror. Both are written in TypeScript.

- [backnotprop/plannotator](https://seerepo.com/r/backnotprop/plannotator): The workspace to stay in the loop and on top of agents - shape, decide, plan, annotate, review code, share with team, and send all feedback to agents with one click. 
- [paperclipai/paperclip](https://seerepo.com/r/paperclipai/paperclip): The open-source app everyone uses to manage agents at work

## What they share and what sets them apart

- In common: React, Vite, Anthropic, MCP, Tailwind CSS, Mermaid, dompurify, Lucide, Base UI, motion, Zod, Drizzle, yaml, class-variance-authority, tailwind-merge, CodeMirror
- Only in plannotator: @opencode-ai/plugin, @earendil-works/pi-tui, Pi, @viz-js/viz, @agentclientprotocol/sdk, marked, @opencode-ai/sdk, sonner, shiki, uqr, dockview-react, @joplin/turndown-plugin-gfm, parse5, turndown, perfect-freehand, TanStack, katex
- Only in paperclip: Express, Postgres, embedded-postgres, Google, aws-sdk-s3, AWS S3, Tokio, OpenAI, Sentry, Svix, react-router-dom, @clack/prompts, acpx, Cursor, aws-sdk-sts, hmac, aws-sdk-bedrockagentcore, react-markdown, remark-gfm, jsonschema, Ajv, @boxd-sh/sdk, Cloudflare, @daytonaio/sdk, e2b, @kubernetes/client-node, novita-sandbox, three, Better Auth, Vercel, chat, ai, OpenRouter, ai-sdk, sharp, ajv-formats, opentelemetry, pino, pino-http, Radix UI, dnd-kit, @mdxeditor/editor, lexical, @lezer/highlight, cmdk, react-resizable-panels, xterm, @assistant-ui/react, @spekoai/client, mdast-util-from-markdown

## Side by side

| | plannotator | paperclip |
|---|---|---|
| Size | 1,355,493 lines written, 2,485 code files | 3,556,913 lines written, 5,493 code files |
| Who writes it | 20.8% of its commits signed by AI. With Claude Code, Devin, GitHub Copilot, and Codex | 26.5% of its commits signed by AI. With Claude Code, Codex, Cursor, and GitHub Copilot |
| Activity | Last push November 13, 2026, 5,551 commits, 10,410 stars | Last push November 12, 2026, 7,243 commits, 113,227 stars |
| Tests | 2,651 test files. 65.3% of its code files have a test that imports them | 6,093 test files. 62.7% 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, plannotator or paperclip?

paperclip, with 3,556,913 lines written; plannotator has 1,355,493.

The proof: [paperclipai/paperclip's code at commit 51d7764](https://github.com/paperclipai/paperclip/tree/51d77648bc62c2f05fdf377df1b35b1673da3b1b)

### Which has more GitHub stars, plannotator or paperclip?

paperclip, with 113,227 stars; plannotator has 10,410.

The proof: [paperclipai/paperclip on GitHub](https://github.com/paperclipai/paperclip)

### Which has more tests, plannotator or paperclip?

paperclip, with 6,093 test files; plannotator has 2,651.

The proof: [paperclipai/paperclip's code at commit 51d7764](https://github.com/paperclipai/paperclip/tree/51d77648bc62c2f05fdf377df1b35b1673da3b1b)

### Which was updated more recently, plannotator or paperclip?

plannotator: its last push was on November 13, 2026, and paperclip's on November 12, 2026.

The proof: [backnotprop/plannotator's commits on GitHub](https://github.com/backnotprop/plannotator/commits)

### Which has more commits signed by AI, plannotator or paperclip?

paperclip: an AI signed 26.5% of its commits, with Claude Code, Codex, Cursor, and GitHub Copilot; in plannotator, 20.8%.

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

## Sources

- backnotprop/plannotator: Read on November 13, 2026, at commit 6cd0324 (https://github.com/backnotprop/plannotator/tree/6cd0324f651d8cdc0effc6c1866a694198942bb5)
- paperclipai/paperclip: Read on November 12, 2026, at commit 51d7764 (https://github.com/paperclipai/paperclip/tree/51d77648bc62c2f05fdf377df1b35b1673da3b1b)

## 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.