Must have VoIP Software for Windows

Ozeki VoIP SIP .NET SDK allows to develop Do Not Disturb (DND) function for SIP softphones. If DoNotDisturb flag is set to true, the incoming calls will be rejected by a busy signal. The Ozeki VoIP SIP SDK makes it possible to extend this program with...

Built by gamers, for gamers, C3 provides voice services for players of all skill levels. C3 has the best in-class audio quality with capabilities such as push-to-talk and text-to-voice. Create and manage your own channels and sub-channels - anyone can...

Cactus is a software-based public branch exchange (PBX) for Voice over IP telephones. It runs on any Windows PC with a network adapter and also implements a VoIP-ISDN gateway if an optional ISDN card is plugged into the PC. Cactus is SIP compliant and...

Call and Play has been developed to allow any person to import contacts, play messages followed by a chat message to follow up. Call and Play also can be used to call any phone/cell number in the world and play a message followed by a text/sms message....

This application behaves like a SIP UAC and its main purpose is to generate SIP calls to any SIP UAS. The user has total control over each SIP header and parameters. It is very useful when testing different scenarios or replicating signaling or media...

Simply install the software client and make phone call to your friend without paying airtime fee within Callanywhere network. Need to complete the registration after installation to obtain your unique phone number. Comply with most of USB Phone or USB...

Record Skype calls and phone calls the easy way with Callburner. Very easy to use interface and small file size for easy download. That is what we do, we make things easy for you.Limitations:30-day...

You don't have to spend thousands on a telephone system. CallButler is a complete VoIP based small business telephone system that can be setup in just 10 minutes. It has support for voicemail, auto-attendant, IVR, music on hold, custom scripting and...

You don't have to spend thousands on a telephone system. CallButler is a complete Skype based small business telephone system that can be setup in just 10 minutes. It has support for PBX, voicemail, auto-attendant, IVR, and music on hold. With CallButler...

You don't have to spend thousands on a telephone system. CallButler Professional For Skype is a complete Skype based small business telephone system that can be setup in just 10 minutes. It has support for PBX, voicemail, auto-attendant, IVR, music on...