Company CounterPath Corporation created these great apps:
Bria iPhone Edition - VoIP Softphone SIP Client, Bria VoIP Softphone SIP Client for iPad, Bria Enterprise, Bria Stretto™ for iPad, Bria play, Bria play iPad Edition, Bria Stretto™ for BlackBerry iPhone Edition, Bria Stretto™ for BlackBerry iPad Edition, Bria - VoIP Softphone, Bria Mobile: VoIP Softphone, and others..
