WikiSuite - While Wikipedia is the broadest unified body of knowledge, WikiSuite is the most comprehensive and integrated Open Source enterprise solution.

Zulip - Chat for distributed teams. Zulip combines the immediacy of real-time chat with an email threading model. With Zulip, you can catch up on important conversations while ignoring irrelevant ones.

LibreOffice - Impress - Impress is a truly outstanding tool for creating effective multimedia presentations.

Flow - Stop managing projects from your inbox.

Google Workspace - Google's encompassing suite of cloud-based business apps.

Chatfully - Chatfully is one place for every chat.