3CX
3CX Video Conference
Bria Mobile : VoIP 電話 ソフトフォン
CounterPath Corp
Zoiper IAX SIP VOIP Softphone
Securax EOOD
Bria - VoIP SIP ソフトフォン
Linphone
Belledonne communications
MobileVOIP international calls
Finarea
ZoiperBeta
Cloud Softphone
Acrobits, s.r.o.
Groundwire: VoIP SIP Softphone