[remark5396]

There are already quiet a few softwares that claim to be Notion alternatives or seem to be:

- AppFlowy: https://github.com/AppFlowy-IO/AppFlowy

- AFFiNE: https://github.com/toeverything/AFFiNE

- SiYuan: https://github.com/siyuan-note/siyuan

- Trillium Next: https://github.com/TriliumNext/Notes

- AnyType (only clients are source available): https://github.com/anyproto/anytype-ts

[crabmusket]

https://getoutline.com mentioned in the submission title

[ezst]

Count me as a biiig proponent and user of TriliumNext, it's in my mind and experience the most capable note taking and organising app there is, but I don't think I nor any of its developers would call it a "Notion alternative".

[hardwaresofton]

The future continues to be AGPL

[CountGeek]

And Docmost - https://github.com/docmost/docmost