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Feature Comparison

E-mail, Calendaring & Integration

Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Max. Number of Domains Unlimited Unlimited 900
Max. Number of Users Unlimited Unlimited 300
Active Directory Support (with SSO)
Archiving
Contacts, Shared and Public (GAL)
Calendars & Resource Management 3rd party
Tasks & Notes Tasks only Tasks only 3rd party
API Integration with External Systems
FTP Access 3rd party
White Label (for ISPs and enterprise customers)

The fact that our clients can use IceWarp on Linux CentOS liberates us from the need to pay for Microsoft Client Access Licenses (CALs).

Lim Seow Keang, CEO of MyTech

TeamChat

Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Public & Private Channels Unlimited
Free Guest Access
API Integration with Web Applications
Real-time Active Directory Sync
Video & Voice Calls (one-on-one) Skype for Business 3rd party 3rd party
Multi-Point Conferencing Skype for Business 3rd party 3rd party
Screen Sharing Skype for Business 3rd party 3rd party
Private Instant Messaging Skype for Business 3rd party

Storage

Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Online Document Editing (Word, Excel, PowerPoint ..) Sharepoint online 3rd party
Opening, Editing & Saving in MS OFfice (Desktop)
Document Versioning Share Point Online Share Point Online 3rd party
Access Control Lists
WebDAV/SMB Protocols WebDav Online WebDav Online WebDav Online WebDav Online 3rd party
External Access to Files via URL Sharing Share Point Online
Group Sharing

The ability to support various mobile devices, regardless of their operating system, was one of the winning factors.

Joiey Nizar, Sales Director at VizOne

Apps & Mobile Access

Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Windows Desktop Suite (IceWarp Desktop Client, FileSync, TeamChat Desktop)
Desktop Documents Editing
Desktop Spreadsheets Editing
Desktop Presentations Editing
FileSync client for Windows OneDrive OX drive OneDrive Google Drive 3rd party
FileSync client for Mac OneDrive OX drive OneDrive Google Drive 3rd party
FileSync client for Linux
Mobile Messenger App for iOS Skype Hangouts
Windows Outlook Compatibility
MacOS Compatibility
Exchange ActiveSync support for mobile devices 3rd party
Remote Configuration App for Windows

The support is something that really sets IceWarp apart from all others. We did this project on a very tight schedule and were successful.

Valerie Schafer, IT Director at Z-AXIS

Security

Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Spam Filtering
Integrated Antivirus

Support

Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Exchange
Zimbra
Open Xchange
Kerio Connect
Office 365
Google Apps
Slack
Online Help
Office Hours Support phone
24/7 Phone Support

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