OX App Suite AlternativesOnly apps categorised as Calendar Apps

The best Calendar alternative to OX App Suite is Zimbra Collaboration Suite, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to OX App Suite and five of them are Calendar Apps so hopefully you can find a suitable replacement. Other interesting Calendar App alternatives to OX App Suite are Citadel, OBM, EGroupware and AfterLogic Aurora.

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OX App Suite alternatives are mainly Mail Servers but may also be WebMail Providers or Calendar Apps. Filter by these or use the filter bar below if you want a narrower list of alternatives or looking for a specific functionality of OX App Suite.

OX App Suite

Mail Server
Free • Open Source

The OX App Suite by Open-Xchange is web-based platform offering a suite of apps like an email client, calendar, contacts magement, cloud storage with synchronization and productivity apps for word processing, spreadsheets...

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OX App Suite alternatives page was last updated Jan 24, 2022

Zimbra Collaboration Suite
Zimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more. With the most innovative web application available today, Zimbra boosts the productivity of users on any desktop and dramatically reduces TCO compared to legacy platform vendors.
43 Zimbra Collaboration Suite alternatives
License model
- Freemium • Open Source
Application types
- Mail Server
- Calendar App
Platforms
- Linux
- Online
- Self-Hosted
Zimbra Collaboration Suite Features
Real time collaboration
ActiveSync
Active Directory integration
Show all NaN Zimbra Collaboration Suite features ▾
Zimbra Collaboration Suite VS OX App Suite
Is this a good alternative to OX App Suite?
- Zimbra Collaboration Suite is the most popular Web-based & Linux alternative to OX App Suite.
- Zimbra Collaboration Suite is Freemium and Open SourceOX App Suite is Free and Open Source

Citadel
Is a collaboration suite (messaging and groupware). It is designed to run on open source operating systems such as Linux or BSD. In order to modernize the Citadel platform for the Internet, the Citadel/UX developers added functionality such as shared calendars, instant...
18 Citadel alternatives
License model
- Free • Open Source
Application types
- WebMail Provider
- Calendar App
Platforms
- Linux
- Online
Citadel Features
Real time collaboration
Show all NaN Citadel features ▾
Citadel VS OX App Suite
Is Citadel a good alternative to OX App Suite?

OBM
OBM is a free messaging and collaboration platform useful for just a couple to many thousands of users with strong support for mobile devices.
21 OBM alternatives
License model
- Free • Open Source
Application types
- Mail Server
- WebMail Provider
Platforms
- Mac
- Windows
- Linux
OBM Features
Real time collaboration
CalDAV Support
Show all NaN OBM features ▾
Discontinued
The GitHub repository has been archived and the last update was in 2017.

OBM VS OX App Suite
Is OBM a good alternative to OX App Suite?

EGroupware
Online Collaboration with Chat and Online Office. Is developed as open source software in Germany, offered as free community version and as commercial version. Operation as self-hosted or as SaaS from the computer centre.
24 EGroupware alternatives
License model
- Freemium • Open Source
Application types
- Mail Server
- Calendar App
Platforms
- Linux
- Online
- Self-Hosted
- Software as a Service (SaaS)
+6
EGroupware Features
1. Real time collaboration
2. Kanban Board
3. Document Sharing
4. Remote Work
5. Web-Based
6. CalDAV Support
7. RDP
8. WebDAV Support
9. CardDAV Support
10. Calendar Sync
Show all NaN EGroupware features ▾
EGroupware VS OX App Suite
Is EGroupware a good alternative to OX App Suite?

AfterLogic Aurora
Afterlogic Aurora is an enterprise collaboration system for small and medium-sized business. Aurora provides collaboration of webmail, contacts, calendar, files and helpdesk modules.
11 AfterLogic Aurora alternatives
License model
- Paid • Open Source
Application types
- WebMail Provider
- Calendar App
Platforms
- Windows
- Online
- Android
- iPhone
- Self-Hosted
AfterLogic Aurora Features
File Storage
Online collaboration
Cloud based
Show all NaN AfterLogic Aurora features ▾
+2
AfterLogic Aurora VS OX App Suite
Is AfterLogic Aurora a good alternative to OX App Suite?