Firefox Heads-up Display for Developers
Looks like we might have a potential competitor to Firebug coming out soon… This is exciting!
… an interactive Console to help web developers understand everything that happens during the creation of a web-page. Console entries will be time-stamped objects representing errors, network traffic, javascript events, DOM/HTML mutation and logging output. The Console will also have an interactive command line for evaluating javascript against the current webpage and an interactive Workspace window for entering and evaluating larger blocks of code.
I know it’s far-fetched, and kinda beside the point for Mozilla/Firefox developers to make it cross-platform, but I’d love to see something along the lines of Firebug Lite with this too.

