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Voice APIs

Alternatives to Twilio Elastic SIP Trunking

The tools Specifiction weighs against Twilio Elastic SIP Trunking, from its list of voice apis, each with its plans, platforms and spec score.

  1. 01 Callr
    From €599/mo Free trial Web · iOS · Android · API
    9.0 Visit Specs
  2. 02 D7 Networks

    It suits teams needing programmable SMS, WhatsApp messaging, number lookup, or verification, with SDKs and listed integrations for connecting to other services.

    Free plan Web · API
    8.9 Visit Specs
  3. 03 46elks
    From €3/mo Free plan Web · API
    8.7 Visit Specs
  4. 04 Telnyx SIP Trunking

    It suits businesses needing global voice calling and PSTN connectivity, including enterprises.

    From $500/mo Free plan Web · iOS · Android · API
    8.6 Visit Specs
  5. 05 Aculab Cloud

    Aculab Cloud suits businesses building communications applications with APIs rather than specialist telephony equipment.

    Free trial Web · iOS · Android · API
    8.3 Visit Specs
  6. 06 CallFire API

    CallFire API suits developers integrating CallFire telephony into CRM platforms, mobile apps, or backend website systems.

    From $99/mo Free plan API
    8.2 Visit Specs
  7. 07 Wazo Platform

    Wazo suits developers building communication infrastructure or services to fit business and technical requirements.

    Free plan Web · Linux · iOS · Android
    8.2 Visit Specs
  8. 08 Plivo Voice API

    It suits developers building voice calling into web or mobile applications, including teams that need SIP support, call recording, or multiple call-handling features.

    From $0.01/mo Free trial Web · iOS · Android · API
    8.1 Visit Specs
  9. 09 Asterisk

    It suits teams building communications systems that can work with Linux, scripting, networking, and telephony.

    Free plan Linux · API · Self-hosted
    8.0 Visit Specs
  10. 10 FreeSWITCH

    FreeSWITCH suits teams building voice or video communication products that need call routing, protocol connections, or media processing.

    Free plan Windows · macOS · Linux · API
    8.0 Visit Specs
  11. 11 Infobip Voice API

    The Calls API suits developers building voice applications for mobile or web.

    Free trial Web · iOS · Android · API
    7.9 Visit Specs
  12. 12 Amazon Chime SDK PSTN Audio
    Web · Windows · iOS · Android
    7.8 Visit Specs
  13. 13 Kamailio
    Free plan Linux · API · Self-hosted
    7.8 Visit Specs
  14. 14 Amazon Chime SDK Voice Connector
    Web · API · Self-hosted
    7.5 Visit Specs
  15. 15 SIP.IO

    SIP.IO is intended for developers, BPOs and contact centers, and resellers or white-label operators.

    Free plan Web · API
    7.4 Visit Specs
  16. 16 Commio Voice API
    API
    7.0 Visit Specs
  17. 17 Kaleyra Voice API
    API
    6.9 Visit Specs
  18. 18 Orange Voice API
    API
    6.9 Visit Specs
  19. 19 Telnyx Voice API
    From $500/mo Free plan Web · iOS · Android
    6.9 Visit Specs
  20. 20 YateClient
    Windows · macOS · Linux · iOS
    6.9 Visit Specs
  21. 21 8x8 CPaaS Voice
    Web
    6.0 Visit Specs
  22. 22 Apifonica Voice API
    Web
    6.0 Visit Specs
  23. 23 Bird Voice API
    Web
    6.0 Visit Specs
  24. 24 EnableX Voice API
    Web · iOS · Android
    6.0 Visit Specs
  25. 25 Azure Communication Services SMS
    5.9 Visit Specs
  26. 26 Bandwidth Voice API
    5.9 Visit Specs
  27. 27 BICS Voice API
    Web
    5.9 Visit Specs
  28. 28 Alianza Crux API
    5.8 Visit Specs
  29. 29 CarrierX Programmable Voice
    Web
    5.8 Visit Specs
  30. 30 Cloudonix Voice API
    Web
    5.7 Visit Specs

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