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Buyer’s Guide Category · Recorded AI searches

Custom VoIP software development services

1 AI search shown here across specific buyer needs and locations.

About these results: These lists were generated by AI and may contain errors or outdated information. They are recorded search results, not TMC market rankings.

Recorded AI searchGeminiSep 29, 2026Global

Results for this buyer need

Telecom operators, ISPs, or enterprises procuring bespoke VoIP platform engineering on open-source telephony stacks

10 companies returned. Positions belong to this saved response, not an overall market ranking.

The model’s stated reasons for inclusion

A linked name opens a matching company listing; the link does not verify the model’s product claims.

  1. #1
    OpenSIPS Solutions

    Founded and staffed by the creators and core maintainers of OpenSIPS, providing tier-one custom SIP proxy, SBC, load balancing, and carrier-grade routing development directly on the OpenSIPS stack.

  2. #2
    Asipto

    Operated directly by the co-founders and core maintainers of the Kamailio SIP Server project, delivering bespoke engineering, architecture design, and C module development for large-scale telecom operators.

  3. #3
    SignalWire, Inc.

    Founded and operated by the original creators and core developers of FreeSWITCH, providing specialized enterprise engineering, custom C-module development, and deep telecom platform services.

  4. #4
    Sangoma Technologies

    The primary commercial sponsor and owner of Asterisk, providing specialized professional services and custom development on Asterisk and FreePBX engines for service providers and enterprises.

  5. #5
    Ecosmob Technologies Pvt. Ltd.

    A specialized global telecom software development firm with over 15 years of experience delivering bespoke VoIP platforms, softswitches, and SBCs built on FreeSWITCH, Kamailio, OpenSIPS, and Asterisk.

  6. #6
    Inextrix Technologies Pvt. Ltd.

    An established VoIP software engineering company and developer of the open-source ASTPP billing/switching platform, specializing in bespoke deployments across Kamailio, Asterisk, and FreeSWITCH.

  7. #7
    ITsysCOM GmbH

    Creator and maintainer of the open-source telecom rating and billing engine CGRateS, offering custom development, SIP platform design, and integration services across FreeSWITCH, Kamailio, and OpenSIPS.

  8. #8
    Irontec

    Open-source communications consultancy and developer of IvozProvider, offering bespoke VoIP architecture, integration, and development around Asterisk, Kamailio, RTPEngine, and FreeSWITCH.

  9. #9
    CelloIP Technologies

    Specialized communications software consultancy providing bespoke carrier-grade softswitch engineering, SIP routing, and custom modules across Asterisk, FreeSWITCH, Kamailio, and WebRTC.

  10. #10
    AgilityFeat, Inc.

    Through its dedicated WebRTC.ventures brand, provides custom development connecting WebRTC real-time voice applications to open-source SIP backends like FreeSWITCH and OpenSIPS for telecom networks.

What this evidence shows

Recorded results, not product testing

10 of 10 visible entries on this page link to existing public Buyer’s Guide listings through their saved company mappings. An unlinked name does not change the saved search result or imply a negative judgment about that company.

These searches record who appeared, where, when, and the model’s stated reasons. They do not establish product features, suitability for your venue, or which companies were considered but left out. Check important claims with the provider before making a purchase.

How to read this page

About these results

The model was not given a target company name. These searches are not product endorsements or a complete market directory.

Provider names identify the AI family. Exact model versions and testing configuration are maintained internally. Buyer needs and reasons are preserved as recorded; verify services, locations, and compliance claims directly with providers.

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