Freesentral Alternatives

Route and Dec popular communication protocols freeswitch audio, video, text, developed with scalable open source cross-platform phone, or any Features:Free,Open,Source,Mac,Windows,Linux,BSD

Together, Elastix IP PBX, email, IM, fax, the open source unified communications server software that brings you and functions. Has a web interface. Features:Freemium,Linux

Yate-networking-software, network-hardware allocation (concept) softswitch. Supported VoIP protocols: H. 323, SIP, IAX1, IAX2, RTP. Plain old Features:Free,Open,Source,Linux

Begin custom telephony solutions with asterisk, asterisknow is the fastest way. Just download the .the ISO file burn it to a CD, insert it into the CD or Features:Free,Linux

The possibility of an extension based on the stars and the vase-oriented unified communication platform. Features:Free,Open,Source,Mac,Windows,Linux,Self-Hosted

XiVO with other networks such as public telephone lines through a private network such as a local or an IP-PBX, the connection to mobile phones, and mobile unified communications platform Features:Free,Open,Source,Mac,Windows,Linux

PBX in a flash-star, numbering, and CentOS-based PBX system, comes download as an ISO. A two-step offers more flexibility in installation Features:Free,Open,Source,Linux

Incredible PBX Asterisk® PBX is a secure and feature-rich application. Rethinking the PBX security model from the ground up. Features:Free,Open,Source,Linux,Raspbian,Raspberry,Pi

Taridyum & tricks, software based PBX-VoIP-PBX-system replaces the traditional proprietary hardware quickly and easily. & tricks open-source operating system (Linux)is easy Features:Freemium,Linux,iPhone