head to head · open source
AppFlowy vs second-brain-cloudflare
AppFlowy has 76,833 GitHub stars, 6,021 forks, 1,030 open issues and last shipped 4 days ago. second-brain-cloudflare has 771 stars, 117 forks, 16 open issues and last shipped 2 days ago. AppFlowy leads on adoption by 9,865% (76,833 vs 771 stars). AppFlowy is written in Dart under AGPL-3.0; second-brain-cloudflare is written in TypeScript under MIT. AppFlowy has attracted 8% as many forks as stars, second-brain-cloudflare 15%. second-brain-cloudflare was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
← all 15422 open source comparisons
Side by side
| AppFlowy | second-brain-cloudflare | |
|---|---|---|
| GitHub stars | ★ 77K | ★ 771 |
| License | AGPL-3.0 | MIT |
| Written in | Dart | TypeScript |
| Last push | 2026-09-15 | 2026-09-17 |
| Forks | ⑂ 6.0K | ⑂ 117 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick AppFlowy if
- You weight community size — 77K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches Dart
- You value the larger contributor base for long-term maintenance
pick second-brain-cloudflare if
- You want the second-brain-cloudflare feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and second-brain-cloudflare fits your workflow better
About AppFlowy
AppFlowy is an open source collaborative workspace platform that combines note taking, project management, wikis, and AI features into a single interface. It runs as a desktop and mobile application and supports self hosting, built with Flutter for the frontend and Rust for the backend. AppFlowy lives in the productivity and knowledge management ecosystem, positioned explicitly as a Notion alternative.
read the full AppFlowy overview →
About second-brain-cloudflare
Second Brain is a self hosted memory layer for AI tools — an MIT licensed TypeScript application that runs as a Cloudflare Worker, stores anything once, and lets Claude, ChatGPT, Cursor, Codex, and any other Model Context Protocol client recall it by meaning — built for individuals and small teams who want their AI context to live in their own Cloudflare account.
read the full second-brain-cloudflare overview →
More in Productivity & Utilities
Related comparisons
More Note Taking & Knowledge Management projects
Compare either of these against the rest of the Note Taking & Knowledge Management field.
Frequently asked questions
Is AppFlowy or second-brain-cloudflare more popular?
AppFlowy has 76,833 GitHub stars and second-brain-cloudflare has 771. AppFlowy has the larger community by that measure.
Are AppFlowy and second-brain-cloudflare free?
Both are open source. AppFlowy is licensed under AGPL-3.0 and second-brain-cloudflare under MIT. Neither carries a licence fee.
What is the difference between AppFlowy and second-brain-cloudflare?
AppFlowy is written in Dart and second-brain-cloudflare in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, AppFlowy or second-brain-cloudflare?
Choose AppFlowy if you want the larger community (76,833 stars) or its AGPL-3.0 licence terms. Choose second-brain-cloudflare if its feature set, stack or MIT licence fits better. Both are self-hostable.