Grommunio is an open source groupware solution. It includes everything you need (and want) for your daily professional life. Its open source nature allows you to keep complete control of your data and your infrastructure. You can see what is happening to your data anytime and anywhere: on-premises or in the (hybrid) cloud. Naturally it also stays easy to integrate into existing environments, and its modular architecture remains the foundation for easy scalability. The combination of file sharing, web meetings, email and calendaring provides you with anything you need to go through your working day. Grommunio implements the standard Microsoft Exchange protocols like ActiveSync, Autodiscover, MAPI over HTTP, Outlook Anywhere, and Exchange Web Services; meaning it works with Outlook on Windows and Mac without plugins, and it works on your mobile device without extra apps.