Welcome to OpenChange
Download OpenChange 2.0 QUADRANT
OpenChange 2.0 QUADRANT is the latest release available for download. Download packages for your Linux distributions, sources and GPG signature:
OpenChange is a portable Open Source implementation of Microsoft Exchange server and Exchange protocols. It provides a complete solution to interoperate with Microsoft Outlook clients or Microsoft Exchange servers.
OpenChange client-side library is used in existing messaging clients and is the solution in new projects to communicate natively with Microsoft Exchange and Exchange-compatible servers. OpenChange server is a transparent Microsoft Exchange server replacement using native Exchange protocols and does not require any plugin installation in Outlook.
OpenChange is a member project of the Software Freedom Conservancy.
Deploy OpenChange in 3 minutes - Learn how at the Zentyal Summit 2013
OpenChange has been integrated in the Zentyal Linux small business server project, making it possible to carry out an OpenChange deployment through Zentyal Server's graphical user interface in only 3 minutes. The first technology preview of this integration will be discussed and showcased at the Zentyal Summit 2013, that is to be held in Zaragoza (Spain) on the 3rd and 4th of October.
During the event, Julien Kerihuel (CTO of Zentyal and Lead developer of OpenChange) will deliver a technical overview of the integration as well as a technical workshop of the OpenChange project. Moreover, Ignacio Correas (CEO of Zentyal) will discuss the commercial opportunities Zentyal-OpenChange integration offers. The first technology preview, that will be available for download since the 3rd of October, is also made available for testing in the demo space of the event. Check out the program for further details.
The Zentyal Summit 2013, held under the slogan "Keep Calm and Go Hybrid", will focus specially on how to seamlessly replace Microsoft Active Directory and Microsoft Exchange based solutions and what alternatives allow SMBs to keep their local IT infrastructure, while adapting cloud-solutions according to their needs. The event is aimed at current and potential Zentyal partners, customers, community members and Zentyal Server users. There is no registration fee and the event will be transmitted on-line, but registration is compulsory.
OpenChange on GitHub
The OpenChange project GIT repository has been migrated to GitHub to ease further development, collaborations and contributions.
The repository is available through the openchange organization page at the following URL:
or directly through GIT:
git clone https://github.com/openchange/openchange.git