OxygenOffice Professional (formely know as OpenOffice.org Premium) is a free and open source enhancement of official OpenOffice.org plus some Extras for you to use. The Hungarian Native Language Team has modified the source of OpenOffice.org and bundled lot of extras with it.

Few of the extras you get with OxygenOffice Professional:
· Clip Art (currently more than 2,900 objects)
· Templates (number varies by language)
· Samples (number varies by language)
· Documentation (if available)
· Fonts (more than 90 fonts)