Aculab - Telephony platforms - cloud, hardware and software.
Asterix - Open source framework for building communications applications. (F)
Grasshopper - Cloud phone system
Line2 - is a cloud phone service that adds a second line to your mobile phones, tablets and computers with the simplicity of an app
NetFortris - Cloud based VoIP Phone Systems, On-Premise Phone Systems, Collaboration Tools & Contact Center Solutions
Ring Central - Cloud based PBX
Skype - A freemium voice-over-IP service and instant messaging client (F)
Twilio - APIs for Voice, VoIP and Text across office locations and devices
Keep the conversation going by connecting with me on the links below
Expat Pat. Content thieves will be eaten - then killed :-)