The best open source alternative to Notion is Standard Notes, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Notion and loads of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Notion are CherryTree (Free, Open Source), Zim (Free, Open Source), TiddlyWiki (Free, Open Source) and Zettlr (Free, Open Source).
This is a ToDo List / Time Tracker / Personal Jira Task Manager for Linux, MacOS and Windows to make you work super productively. * Plan, track & summarize. Create time sheets and work summaries in a breeze to easily export them to your companies time tracking system.
Kanboard is a simple visual task board software. Kanboard is a free and open source Kanban project management software. There is no fancy user interface, Kanboard focus on simplicity and minimalism. The number of features is voluntary limited.
Etherpad is a highly customizable Open Source online editor providing collaborative editing in really real-time. Collaborating in really real-time No more sending your stuff back and forth via email, just set up a pad, share the link and start collaborating!
Dendron is an open-source, local-first, markdown-based, note-taking tool built on top of VSCode. It supports all the usual features you would expect like tagging, backlinks, a graph view, split panes, and so forth.