Open-Xchange and WikiSuite have some similarities. This page is to explain the differences and rationale of choices. You likely will be interested in the other alternatives to WikiSuite.
- Both are enterprise suites
- WikiSuite is fully Free / Libre / Open Source wheras Open-Xchange is a hybrid. See [http://oxpedia.org/wiki/index.php?title=Product_FAQ#Is_Open-Xchange_an_Open_Source_company.3F