Use tamperdata to view and modify HTTP/HTTPS headers and post parameters.
Trace and time http response/requests.
Security test web applications by modifying POST parameters.
FYI current version of Google Web Accelerator is incompatible with the tampering function of TamperData. Your browser will crash.
Code:
https://addons.mozilla.org/en-US/firefox/addon/966
WorldIP 1.1.4
WorldIP is a free add-on for Mozilla Firefox. The add-on, when installed into your Web browser, shows up-to-date information about real physical location of a web server you are currently visiting.
WorldIP extension is one of WIPmania's products based on WorldIP geolocation database. The database is more correct than Whois records and Whois-based databases, that show geographic locations of network owners, and not the geographic location of networks themselves.
WorldIP plugin is highly configurable. It can display your own IP address, and the Web-server used running on that server, such as Apache, nginx and so on. If desired, it transfers you to Wip-Map information system.
Code:
https://addons.mozilla.org/en-US/firefox/addon/8661
Xmarks (formerly Foxmarks) 3.1.0
It takes only a moment to get up and running with Xmarks. After you install the add-on, click on the notification to set up Xmarks and start backing up and synchronizing your bookmarks. Install Xmarks on each computer you use, and it seamlessly integrates with your web browser and keeps your bookmarks safely backed up and in sync.
Xmarks will sync across browsers too. Today we support Firefox, Internet Explorer, and Safari (Mac OS). Please visit our website at xmarks.com for details.
Secure Password Sync is an optional Xmarks feature. If you'd like to learn more about how it works, visit:
Code:
http://www.xmarks.com/about/features/secure_password_sync