: Mattermost is an open source platform for secure collaboration across the entire software development lifecycle.
: DooTask 是一款轻量级的开源在线项目任务管理工具，提供各类文档协作工具、在线思维导图、在线流程图、项目管理、任务分发、即时 IM，文件管理等工具。
: A platform to create documentation/wiki content built with PHP & Laravel
: An open-source knowledge based community software. You can use it to quickly build your Q&A community for product technical support, customer support, user communication, and more.