Jazzer is a coverage-guided, in-process fuzzer for the JVM platform developed by Code Intelligence. It is based on libFuzzer and brings many of its instrumentation-powered mutation features to the JVM.
The OWASP JBroFuzz Project is a web application fuzzer for requests being made over HTTP and/or HTTPS. Its purpose is to provide a single, portable application that offers stable web protocol fuzzing capabilities.
A Java Hijacking tool for web application session security assessment. A simple Java Fuzzer that can mainly be used for numeric session hijacking and parameter enumeration. Demonstration video is also available.