Computers

A debugging tool similar to the Inspector in Smalltalk environments. [Freeware, Common Public License (CPL)]

A tool for Java developers who are curious about what really goes on inside the JRE (Java Runtime Environment). It provides a view of runtime activity such as system properties and thread activity. [Freeware]

An omniscient (or back-in-time) debugger for Java. Available as stand-alone tool and as Eclipse plug-in. Site includes documentation, introduction video, screenshots, download option and listing of related publications. [GPL v2]