Pretty print your Ruby objects with style – in full color and with proper indentation

Mac HTTP client/debugger

Pry is a powerful alternative to the standard IRB shell for Ruby. It features syntax highlighting, a flexible plugin architecture, runtime invocation and source and documentation browsing.

Reveal brings powerful runtime view debugging to iOS developers. With advanced visualisations, comprehensive inspectors and the ability to modify applications on the fly, you’ll be debugging view layout and rendering problems in seconds.

A powerful HTTP client to test web services

Provides an irb session to a running ruby process - very handy for debugging

Perl memcached interrogator that outputs in a top-like format

Make HTTP requests with params and see the response formatted nicely

Java desktop MySQL profiler using native commands such as SHOW PROCESSLIST

Includes option to follow/ignore redirects

Firebug plugin for debugging PHP in Firefox

De-obfuscate Javascript

Task integration between Eclipse and Bugzilla, Trac and others

HTTP/HTTPS/SSL Monitor/Proxy/Reverse Proxy

WebKit inspector from within TextMAte

Debugging and analysis tools

Looked at this again and realised it works on Safari. Woo

Plug-in to Firebug that recommends steps to provide performance improvements

Use the console commands for Flash

Notifies you by email whenever your Rails app has a “moment”