Here at JCrete in a hacker session with Pierre Laporte (@pingtimeout), Sven Reimers (@svennb), and Thomas Darimont (@thomasdarimont) we managed to put together the start of Cassandra integration in NetBeans IDE.
The Cassandra Driver Core API is really cool and simple to use and in almost no time at all we were able to connect to a Cassandra cluster on Pierre's machine, to which Sven and Thomas were connected as hosts. Look in the Services window below and you'll see the Cassandra node, with one connected host listed, together with tables made available by the cluster, as well as the possibility of displaying data. The data visualization is the next part to work on, probably in an OutlineView.
Source code is here:
A potential next feature after that is syntax coloring for Cassandra Query Language, here's the ANTLR for that: