SIP phone launched a new service called Gizmocall. Using this service, you can call any number in the world from anywhere in the world. Calls are limited to 10 minutes per day to most landlines and some mobile numbers. You can call by entering the phone number in gizmocall.com or you can type in the URL with the phone number (for eg: http://gizmocall.com/1xxxxxxxxxx where x represent the phone number). You don’t have to install any software, but you have to install a plugin. It’s flash based, so you can use it directly from the browser. It currently supports Windows and Mac OS, but Linux support is on the way. Linux support is delayed due to delay in releasing the Flash Player 9 plugin by Adobe.
Update: You can call for 5 minutes every day for free and if you register, you can call for 10 minutes every day. I had problem getting it to work after registration. It worked fine for a call I made before I register. I used the 5 minutes limit and I wanted to register and use another 5 minutes. First, the registration didn’t work because my email address had a hyphen in it. When I gave a different email address, the registration went fine, but then the plugin stopped working. I was getting the same error message (install plugin) even though I reinstalled the plugin couple of times. I think the software seems to be like a beta version rather than a regular release.
i like gizmo