OnSIP
PortSIP Softphone
PortSIP
Sipnetic
IPTON
Linphone
Belledonne communications
Bria - VoIP SIP 소프트폰
CounterPath Corp
Skype
jiPBX - SIP VOIP Softphone
jiWeb Technologies LLP
MobileVOIP international calls
Finarea
Bria Mobile: VoIP Softphone
Acrobits: VoIP SIP Softphone
Acrobits, s.r.o.