具有免费许可证的MariaDB版Collabtive的替代品

• MariaDB
  所有平台 Windows Mac Linux Chrome OS Android iPhone Apple Watch iPad Android Tablet Windows S Web Self-Hosted Software as a Service (SaaS) PHP Chrome Ruby Thunderbird MySQL Community Edition Cloudron MariaDB Ruby on Rails Microsoft SQL Server PostgreSQL
• 免费许可证
  任何牌照 免费许可证 开源许可证 商业牌照