Cql-testdrive is a project mainly written in JAVASCRIPT and JAVA, it's free.
Cassandra CQL Testdrive with JDBC
The experimental webapp using Apache Cassandra(http://cassandra.apache.org) CQL JDBC driver with Jetty and Commons DBCP.
However, current version(v0.8.0) of CQL JDBC driver does not work because of UnsupportedOperationException thrown by the driver.
Install the latest version of Maven(http://maven.apache.org). Then type::
mvn jetty:run