Alternativas ao imarvel para Google Apps com licença de código aberto

• Google Apps
  Todas as plataformas Windows Mac Linux Chrome OS Android iPhone Windows Phone iPad Android Tablet Kindle Fire Windows S Web Self-Hosted Firefox Opera Safari Internet Explorer Vivaldi Browser Chromecast BSD Windows Mobile Wordpress Slack Electron / Atom Shell Chrome Microsoft Edge Gmail Twitter Yandex.Browser Google Drive Dropbox Brave Google Apps Trello Instagram GitHub Pages ASP.NET MVC Microsoft OneDrive DuckDuckGo
• Licença Open Source
  Qualquer licença Licença gratuita Licença Open Source Licença comercial