Obsidian is the private and flexible note‑taking app that adapts to the way you think.
https://obsidian.md
A privacy-first, open-source platform for knowledge management and collaboration.
https://logseq.com
As easy to use as a word document or bulleted list, and as powerful for finding, collecting, and connecting related ideas as a graph database. Collaborate with others in real time, or store all your data locally.
https://roamresearch.com
A new tool that blends your everyday work apps into one. It's the all-in-one workspace for you and your team.
https://www.notion.com
The digital note-taking app for your devices
https://www.onenote.com
View, edit, create and share your notes with Notes on the web. Changes will sync across your devices with iCloud.
https://www.icloud.com/notes
Capture notes, share them with others, and access them from your computer, phone or tablet. Free with a Google account.
https://www.google.com/keep/