Be careful with old versions!
- HTTP Header Panel shows the active HTTP requests
- Tap on a request to see request/response details
- Pause and Clear commands help manage the information
- Remove the HTTP Header Panel completely using a preference
There is also a fix for window.console support. I had to work around the fact that Firefox now supports a simple window.console API. Mobile Tools overrides the built-in console.
This version of Mobile Tools also adds basic support for a Firebug Console feature. Web pages can use the Console API and the output is displayed in the Firefox Mobile error console.