It has a few thousand member's base in Czech Republic.

There are not only individual but also collective members, like clubs, local radio stations, etc. Unijazz helps its members with realizing of their cultural projects. Unijazz is publishing an uncommercial monthly magazine UNI, which is oriented mostly on young, more particular readers. Music, mostly rock, jazz and contemporary (music) makes more than an half of its content. It also contains reviews of new CDs released in Czech Republic and abroad.

Unijazz yearly organizes three big music festivals: Boskovice, Bohnice and Alternativa. Music festival in Moravian city Boskovice is focused on saving and restoring of local Jewish quarter. There are going many musical groups of different genres introduced - rock, jazz, classical and folk music - and many theatre performances and movie shows are taking place. Exhibitions are also part of the festival. Performances are taking place in an open air amphitheatre, in the ruins of a local castle, in synagogue and other places.