Java bindings for the AWS Common Runtime
CPAchecker, the Configurable Software-Verification Platform (read-only mirror)
a concolic testing engine for Java
JavaSMT - Unified Java API for SMT solvers.
JPF is an extensible software analysis framework for Java bytecode. jpf-core is the basis for all JPF projects; you always need to install it. It contains the basic VM and model checking infrastructure, and can be used to check for concurrency defects like deadlocks, and unhandled exceptions like NullPointerExceptions and AssertionErrors.