We've been using Naviscope quite a bit to troubleshoot problems and find bugs that aren't obvious from watching the browser. It's somewhat limited in a few ways, though, so I'm looking for alternatives. Here's my wish list:

1) Easy to have a user install, get log files, then remove. Naviscope requires a number of steps to turn on the proper options and likes to keep running on systems it's been installed to.

2) Real-time monitor that highlights errors. To find a 404 error in a gif in the Naviscope real-time monitor, you have to check the response headers of each individual file. There's also no option to log only errors.

Does such a beast exist?