PortSIP Softphone
PortSIP
Softphone
Vtel
Cloud Softphone
Acrobits, s.r.o.
SessionTalk Softphone
SessionTalk Ltd
VirtualPBX Softphone
VirtualPBX.com, Inc.
Intermedia softphone
Intermedia.net, Inc.
Voipfone Softphone
Voipfone
Zoiper IAX SIP VOIP Softphone
Securax EOOD
Linphone
Belledonne communications
Sipnetic
IPTON