SPIZD stands for Stress Probing Invasive Zap Destructor; it's a command-line stress test tool used to determine how many simultaneous (concurrent) connections servers can handle. Protocols: http, pop3, pop3s, imap, imaps, smtp, smtps, ssh, radius.
A Portable Thin Client & Server Pair for XA / 2PC Testing
A portable testing tool to validate the configuration of XA and two-phase commit for Java EE 6 Containers. The tool permits the stress-testing, performance characterization and correct transaction semantics of distributed transactions across Three XA resource managers by Exception Injection. The thin-client can be run from the command-line or inside the IDE. The server side component includes EJB packaging and some simple Web servlet support for retrieving diagnostic and performance data from the testbed.