Confluence is particularly recommended for medium to large-sized organizations, software development teams, and businesses that utilize other Atlassian products. It's ideal for groups that require advanced documentation features, seamless integrations, and strong collaboration tools to optimize their workflows.
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
WackoWiki - WackoWiki is a light and easy to install multilingual Wiki-engine.
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
DokuWiki - DokuWiki is a simple to use and highly versatile Open Source wiki software that doesn't require a database.
Slack - A messaging app for teams who see through the Earth!
XWiki - A powerful Open Source collaborative platform enhancing collaboration and communication.