Open-Xchange Community Edition
Open-Xchange Community Edition differs from other Open-Xchange editions in not being supported by Open-Xchange. It has the very same functionality like all other editions and shares the same code base.
When you choose to install packages for one of the maintained platforms as listed below, you can later buy maintenance and a support contract without migrating any data.
Products like OXtender for MS Outlook and OXtender for Mac OS can only be purchased and supported in combination with a maintenance contract and thus only with products like HE, SE, SE for UCS or AE.