Kolab Now vs Kopano : Which is Better?

Kolab Now

Kolab Now is a web-based email and groupware service, based completely on free and open-source software. Developed by Kolab Systems AG

License: Commercial

Categories: Backup & Sync Office & Productivity Online Services Security & Privacy

Apps available for Online DAVdroid

Kopano is an open-source groupware application suite originally based on Zarafa.

License: Open Source

Categories: File Sharing Office & Productivity Online Services

Apps available for Mac OS X Windows Linux Online Android

Feature	Kolab Now	Kopano
Collaborative
CalDAV
CardDAV
Cloud Storage
Email Server
Notetaking
Real time collaboration
Security & Privacy
End-to-End Encryption
Privacy focused
Encrypted Email
Custom domain
Google Sheets integration
Mobile Device Management
Online collaboration
Calendar integration
Encrypted mail and contacts
POP3 Support
Web-Based
Ad-free
Document sharing
Integrated Spam Protection
Custom login portal
Built-in Calendar
Push Notifications
Support for IMAP
On-premises software
Shared calendars
File sharing
IFTTT integration
Support for WebDAV
Active Directory integration
ActiveSync
Bookmarks
Dropbox integration
Group chat