FREEDOM251

Freedom251 › Customer Service

Free and open first

Best Interactive Voice Response Software in 2026

Automated phone menus can route callers or offer self-service interactions, so compare the tools by how they let you shape and connect those flows. Speech recognition, supported languages, caller authentication, and self-service data lookup indicate the listed interaction capabilities; deployment, API access, and a visual flow builder add other points to weigh. FreeSWITCH, Voicent, and Telnyx Text-to-Speech API are among the options, along with Twilio Studio and Asterisk. Check the stated free-plan availability and paid starting point too. These details can help you consider which capabilities and access arrangements fit the caller experience you intend to provide.

  1. 1

    Asterisk

    Free plan APILinuxSelf-hosted

    Asterisk provides a broad framework for building communications systems, with multiple interfaces and VoIP protocols.

    7.5 Free plan Visit site
  2. 2

    FreeSWITCH

    Free plan APILinuxMac+2

    FreeSWITCH provides a no-cost, self-hostable framework with call-control and integration options.

    7.4 Free plan Visit site
  3. 3

    Voicent

    Free plan AndroidAPIiPhone+3

    Voicent combines automated messaging with call-center features and both cloud and on-premise deployment options.

    7.0 Free plan · paid from $19/mo · 30-day trial Visit site
  4. 4

    Wazo Platform

    by Wazo Platform
    Free plan AndroidAPIiPhone+3

    Choose Wazo Platform if you need a free, self-hosted and programmable foundation for telecom services.

    6.9 Open source Visit site
  5. 5

    SIP.IO

    Free plan APIWeb

    SIP.IO combines programmable voice and contact center features, with options for messaging, recording, and AI-assisted calls.

    6.8 Free plan Visit site
  6. 6

    Twilio Studio

    Free plan APIWeb

    Twilio Studio combines a visual workflow builder with triggers, backend connections, and optional code for communication tasks.

    6.7 Free plan · paid from $0.00 Visit site
  7. 7

    BizPlus IVR

    Free trial APISelf-hostedWeb

    Choose BizPlus IVR if your contact centre needs configurable routing, call records and integrations, with options for voice-bot automation.

    6.3 From ₹2,499/mo Visit site
  8. 8

    Avaya Experience Platform

    by Avaya Experience Platform
    Paid APISelf-hostedWeb

    Choose Avaya Experience Platform if your organization needs enterprise contact center orchestration across channels, data, AI, and workflows.

    5.9 Pricing on request Visit site
  9. 9

    Cloud IVR

    Free trial Web

    Cloud IVR combines call routing, text-generated voice prompts, and reporting in a web-based service.

    5.9 From €99.99/yr Visit site
  10. 10

    NCH IVM Telephone Answering Attendant

    Free trial LinuxWindows

    Choose IVM if your business needs on-premises telephone answering, voicemail, call routing, or outbound messaging, with plan options spanning basic answering to enterprise line capacity.

    5.9 From $99 Visit site
  11. 11

    AVOXI Flow Builder

    Paid APIWeb

    Choose AVOXI Flow Builder if you need configurable call routing across teams, systems, and locations, particularly with API-based rules or the listed integrations.

  12. 12

    Dialogic Digital IVR

    Paid APISelf-hostedWeb

    Choose Dialogic Digital IVR if your organization needs voice routing, mobile USSD self-service, and reporting integrated with existing infrastructure.

    5.7 Pricing on request Visit site
  13. 13

    Ozonetel IVR System

    Free trial Web

    Ozonetel combines IVR flow building, self-service, routing, and outbound campaigns in a cloud service. Ask about regional SLA terms and pricing, and confirm trial availability for the IVR service.

    5.7 Pricing on request · 7-day trial Visit site
  14. 14

    FonaBot IVR Builder

    Paid Web

    FonaBot combines visual call-flow building with browser testing and export options. Starter costs $49 a month; usage beyond each plan’s included amount is billed at its rate.

    5.4 From $49/mo Visit site
  15. 15

    Plum Fuse

    Paid APIWeb

    Plum Fuse combines a visual IVR builder with templates, conversational AI, and API connections to business systems.

    5.3 Pricing on request Visit site
  16. 16

    Plum DEV

    Paid APIWeb

    Plum DEV offers voice and messaging tools for teams building customer self-service applications.

    5.0 Pricing on request Visit site
  17. 17

    Zappix Visual IVR

    Paid APIWeb

    Zappix Visual IVR gives callers a visual self-service route while they remain on the phone, with conversational routing and backend connections.

    5.0 Pricing on request Visit site
  18. 18

    8x8 Intelligent IVR

    Paid Web

    8x8 Intelligent IVR brings call routing, voice input, data lookup, and API access into a web-based cloud service. Consider its usage-based rate and custom-quote process when evaluating it.

    4.9 From $0.05 Visit site
  19. 19

    NiCE Interactive Voice Response

    Paid Web

    NiCE Interactive Voice Response offers a defined set of IVR tools across five paid suites. Buyers can compare the listed suite prices, starting at $110/mo, against their needs.

    4.6 From $110/mo Visit site
  20. 20

    Telnyx TeXML

    Paid Web

    Telnyx TeXML lists usage-based billing as well as higher-commitment plans with additional support or infrastructure.

    4.4 From $0.00 Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

More in Customer Service