Software Alternatives, Accelerators & Startups

Flexisip

SIP proxy server implementation compliant to RFC3261, written in C++11 started in 2011.

Some of the top features or benefits of Flexisip are: Open Source, Cross-Platform Compatibility, Rich Feature Set, Integrated with Linphone, and Scalability. You can visit the info page to learn more.

Flexisip

Flexisip Alternatives & Competitors

The best Flexisip alternatives based on verified products, community votes, reviews and other factors.
Filter: 7 Open-Source Alternatives. Latest update:

  1. 31

    An open source telephony switching and private branch exchange service for Linux.

    Key Asterisk features:

    Open Source Highly Customizable Large Community Wide Range of Features

    Open Source

    /asterisk-alternatives
  2. 32

    FreeSWITCH is an open-source media application designed to support popular protools such as SIP and WebRTC and provides a platform to develop voice and video applications.

    Key FreeSWITCH features:

    Flexibility Scalability Open Source Cross-Platform

    /freeswitch-alternatives
  3. VoIPstudio is an award-winning VoIP system that offers businesses of all sizes a scalable communication solution. It’s inexpensive, easy-to-use, offers a full suite of PBX features, and is fully integrated for CRM.

    Key VoIPstudio features:

    Call Recording Call Forward Call Analytics and Reporting Call Conferencing

    Try for free paid Free Trial $4.99 / Monthly (User)

    Try for free
  4. 32

    Kamailio® (successor of former OpenSER and SER) is an open source SIP server released under...

    Key Kamailio features:

    Scalability Flexibility Open Source Active Community

    /kamailio-alternatives
  5. 31

    FusionPBX is an open source FreeSWITCH GUI.

    Key FusionPBX features:

    Feature-Rich Open-Source Cost-Effective Scalability

    Open Source

    /fusionpbx-alternatives
  6. 24

    The UCaaS Platform Built for MSPs​.

    Key Wazo.io features:

    Open Source Unified Communication Scalability Integration Capabilities

    /wazo-io-alternatives
  7. 27

    XiVO, première solution de téléphonie d'entreprise ToIP Open Source. TPE/PME Grande Entreprise / Centre de contact / Secteur Public. Contact: 04 37 49 78 10.

    Key XiVO features:

    Open Source Advanced Telephony Features Scalability Integration Capabilities

    /xivo-alternatives
  8. 25

    Social & Communications and Development.

    Key miniSIPServer features:

    Ease of Use Feature-Rich Flexible and Scalable Cross-Platform Support

    /minisipserver-alternatives
  9. 29

    VitalPBX is a full-feature PBX (phone system) based on Linux and Asterisk.

    Key VitalPBX features:

    Comprehensive Features Scalability User-Friendly Interface Integration Capabilities

    /vitalpbx-alternatives
  10. 31

    FreePBX is a web-based open source GUI that controls and manages Asterisk (PBX).

    Key freepbx features:

    Open Source Comprehensive Features Community Support Scalability

    Open Source

    /freepbx-alternatives
  11. 24

    VoipSwitch provides complete VoIP and unified communications solutions.

    Key VoipSwitch features:

    Comprehensive Solution Scalability Customizability Integration Capabilities

    /voipswitch-alternatives
  12. 30

    Your Open Source Solution For Unified Comunnications And More….

    Key Issabel features:

    Open Source Comprehensive Feature Set Community Support Cost-Effective

    /issabel-alternatives
  13. 25

    A SIP based implementation of a PBX / unified communications system.

    Key sipXecs features:

    Open Source Scalability Interoperability Rich Feature Set

    /sipxecs-alternatives
  14. 24

    sipXcom open source unified communications software is the standard for enterprise voice solutions. Voice, chat, IVR, presence and more in one application.

    Key sipXcom features:

    Open Source Feature-Rich Scalability Web-Based Management

    Open Source

    /sipxcom-alternatives
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