Firefox VoIP Client
libocannici writes "Abbeynet Labs has released the first version of a Firefox VoIP extension which is a full featured SIP user agent plugin for Firefox." The Firefox extension is completely stand-alone, with all VoIP functionality built directly into it. From one-click calling to SMS sending, this promises to be quite handy. All Internet calls are currently free, just requiring an abbyphone account, while PSTN calls have a small charge.
You think YOU know pain, Penguin boy? Try running Firefox under Mac OS X. You haven't seen a slow, leaky ship until you've run it on OS X. You linux-boys have it EASY.
Thank god for Safari/Konqueror.
It's on the left of the Submit button. I'll make a tutorial if you need any more help.