netmeg - 8:37 pm on Sep 25, 2011 (gmt 0)

1. NAME - LINK
Live HTTP Headers (Firefox extension) - https://addons.mozilla.org/en-US/firefox/addon/live-http-headers/

2. PURPOSE
What it says - checks headers for URLs and returns the server response, including redirects.

3. FREE or PAID
Free

4. WHAT I LIKE
This extension is a non-negotiable gotta-have-it for me. I won't update FF unless I'm sure this extension will still work. I've found some pretty bizarre URL chains this way.

5. WHAT NEEDS IMPROVING
None necessary.