This document discusses tools for web developers including: - Firebug and Firefox developer tools for debugging JavaScript, inspecting CSS, and profiling performance. - Chrome DevTools/Canary for debugging, profiling memory usage, auditing, and remote debugging. - Tips for using the tools like enabling hardware acceleration tracing and using the command line. - Recommendations to follow developers working on dev tools like Jan Odvarko, Paul Rouget, Paul Irish, and Addy Osmani.