KnowledgeTree is a document management software. Its features (including workflow, document alerts and version control) are designed to help organisations manage business processes around documents in addition to enabling file sharing among teams. The application is free and open source.
A wiki ( /ˈwɪki/ WIK-ee) is a website that allows the creation and editing of any number of interlinked web pages via a web browser using a simplified markup language or a WYSIWYG text editor. Wikis are typically powered by wiki software and are often used to create collaborative works.
ProcessMaker is a simple, cost-effective, open source workflow software solution. Also known as business process management (BPM) software, ProcessMaker helps organizations of all sizes / types to easily design, automate, and deploy approval-based business processes.