Tettra is an internal knowledge-sharing app and website designed to help teams become more productive and efficient. It is a centralized hub for your team's shared knowledge, enabling users to quickly search for the information they need and share it with their colleagues. With Tettra, users can create and share knowledge base articles, create custom categories, and manage permissions. It also has an easy-to-use drag-and-drop editor, allowing users to create beautiful, shareable content without needing any coding or design skills. With Tettra, teams can organize their shared knowledge and ensure that everyone involved has access to the information they need.
It's a great lookalike with similar functionality. Same price although not open source. $5/user per month unless your team is small with only 3 people.
Great tool to document anything. Clean design and ux.