paperless-ngx
A community-supported supercharged document management system: scan, index and archive all your documents
phachon
MM-Wiki 一个轻量级的企业知识分享与团队协同软件，可用于快速构建企业 Wiki 和团队知识分享平台。部署方便，使用简单，帮助团队构建一个信息共享、文档管理的协作环境。
zmister2016
mrdoc,online document system developed based on python. It is suitable for individuals and small teams to manage documents, wiki, knowledge and notes. 觅思文档，适合于个人和中小型团队的在线文档、知识库系统。
ONLYOFFICE
Free open source office suite with business productivity tools: document and project management, CRM, mail aggregator.