While Zimbra originally offered a direct download for its Open Source Edition, the landscape has shifted:
To download a turnkey open-source version of Zimbra 9 or 10, users now typically rely on certified community builds like those from UALinux or previously Zextras . 1. Where to Download Zimbra Open Source Edition download zimbra open source edition
These versions transitioned to an "Open Core" model. Official pre-built binaries for the Open Source Edition are no longer directly distributed for free by Synacor on the main Zimbra download page . While Zimbra originally offered a direct download for
To get the software today, you have three primary options depending on your technical comfort level: Official pre-built binaries for the Open Source Edition
Zimbra Open Source Edition (OSE) remains a top-tier choice for organizations seeking a cost-effective, enterprise-grade email and collaboration platform. Whether you are looking for data sovereignty or a flexible alternative to tech giants, downloading Zimbra OSE gives you full control over your communication infrastructure. Important Status Update (2026)