I always go hunting the Wi-Fi networking using my laptop. Everytime I got on a new Wi-Fi network, I like to measure its bandwidth. I found that Bandwidth Tester is pretty handy and I can get a result easily. If you are looking for this tool to work on Firefox 3.5+, here is a work-around version I created:
…And if you want to use any Firefox Add-on on Firefox 3.5+ but it is not available, feel free to let me know! Don’t forget to include the link. Thanks!