Alternatif untuk Collabtive untuk Windows S dengan lesen sumber terbuka

• Windows S
  Semua platform 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
• Lesen Open Source
  Mana-mana lesen Lesen percuma Lesen Open Source Lesen komersil