This extension includes a set of tools for broadband users. It can measure the bandwidth of Internet connections and perform diagnostic tests (ping, traceroute etc).
Overview:
Bandwidth measurement
Open “Tools” menu and click the item “Bandwidth Meter”. You can perform upload and download bandwidth measurement. It also shows your public IP address and public domain name.
Broadband troubleshooting
When Firefox fails to load a webpage, the extension will automatically check whether Internet connction is working or not. You can perform further diagnostic tests (ping, traceroute) or check the archived version of the failed webpage. Just try to type a non-existent domain name(e.g., qwqwqwq121212.com) to see this in action …
Get Bandwidth Meter and Diagnostics 1.2.5 [>>]