I never actually used a debugger before, when coding in Java. Always played with a logger or the well-known : System.out.print. But this debugger has caught my attention :)

The debugger works by collecting "time stamps" which record everything that happens in a program. A GUI then allows you to navigate backwards in time to look at objects, variables, method calls, etc. [more]

Found it via Javalobby and posting it here so I won’t forget about it.