The block editor alone is years of engineering, and it's not even the moat. The moat is that your whole team's brain lives there and syncs in real time. Rebuild the editor and you've built the easy part.
VIBE SCORE 88/100
The parts this build actually needs, each rated on its own — the average is the Vibe Score above.
| Landing page | 99 |
| CRUD database | 95 |
| User login | 92 |
| Search | 86 |
| Realtime collaboration | 67 |
Don't feel like building it? These are already made, open-source, and free.
Just pay. The block editor alone is years of engineering, and it's not even the moat. The moat is that your whole team's brain lives there and syncs in real time. Rebuild the editor and you've built the easy part.
Notion costs $12/mo (about $144/yr) as of 2026-08. That's what a working rebuild would save you.
If your actual need is a personal knowledge base, plain markdown files + any editor is free and future-proof — that's not rebuilding Notion, it's realizing you never needed it Their pricing per seat grows painful at team scale; the export lock-in is real
Yes — AFFiNE, Obsidian are open-source options worth trying before you build your own. Details are in the standard parts section on this sheet.