VoIP Tunneling solution for VoIP service providers and carriers
Free
Samsung Odin 3.10.7 is the best Flashing tool for Samsung Android devices.
The Mizu Webphone is a SIP softphone for the Web
The best tool for oneclick root Xperia Z2, Z1 and many more smartphones.
Kingoroo is the best freeware to root any Android evice in one click.