Boostnote - Boostnote is an open-source note-taking app.
MediaWiki - MediaWiki is a free software wiki package written in PHP, originally for use on Wikipedia.
Checkvist - A professional list-making tool. Minimalist, keyboard-centric online outliner and task management application. Free sharing, unlimited lists, cross-linking, free import and export. Markdown support. Created for geeks 🤓 and all keyboard lovers ⌨️
TiddlyWiki - a non-linear personal web notebook
OneNote - Get the OneNote app for free on your tablet, phone, and computer, so you can capture your ideas and to-do lists in one place wherever you are. Or try OneNote with Office for free.
Confluence - Confluence is content collaboration software that changes how modern teams work