Authkey - SMS & WhatsApp API Alternatives

Authkey - SMS & WhatsApp API is described as 'Authkey is a versatile multiple channels platform, including SMS API, WhatsApp Business API, Email, Voice Call APIs, and various authentication methods such as OTP, 2FA, and more' and is an website in the office & productivity category. There are more than 50 alternatives to Authkey - SMS & WhatsApp API, not only websites but also apps for a variety of platforms, including SaaS, Android, iPhone and Windows apps. The best Authkey - SMS & WhatsApp API alternative is UniStack. It's not free, so if you're looking for a free alternative, you could try Wazo or Fonoster. Other great sites and apps similar to Authkey - SMS & WhatsApp API are Telnyx, Smarter Contact, Twilio and Lead Sherpa.

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Alternatives list

  1. Videsk icon
     1 like

    Videsk is the first plug&play video contact center to communicate with your customers through a video call integrated into your website, app, kiosk, and everything with Internet.

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Online
    • Software as a Service (SaaS)
     
  2. Zujo Now icon
     Like

    Zujo Now is the simple video calling SDK that makes developing video calling apps simpler! It enables developers to build engaging and scalable video calling experiences without writing complex and lengthy code.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Online
     
  3. Releans icon
     1 like

    Start sending text messages within seconds through an intuitive platform, Automate your SMS marketing campaigns. For enterprise companies and volume players, Releans is certainly a terrific option.

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Software as a Service (SaaS)
     
  4. Infobip icon
     1 like

    International Communication Platform as a Service (CPaaS) provider with zero-hop connectivity to telecoms globally. It supports all major mobile communication channels, like SMS, email, WhatsApp, Viber, voice, video and more, over API and web UI.

    Cost / License

    • Freemium
    • Proprietary

    Platforms

    • Online
    • Self-Hosted
    • Software as a Service (SaaS)
     
  5. ExpressText is a SMS Marketing provider that allows anyone with access to a computer and internet connection to utilize mobile marketing, one of the most effective forms of consumer advertisement. With our service, individuals and businesses can manage and execute effective SMS...

    Cost / License

    • Paid
    • Proprietary

    Platforms

    • Online
     
  6. Bandwidth icon
     3 likes

    Communications API Platform - Easily add texting or calling to any app through http API. Send/Receive text messages, picture messages, phone calls in one line of code.

    Cost / License

    • Paid
    • Proprietary

    Platforms

    • Online
     
  7. Spring Edge icon
     4 likes

    Spring Edge Technologies Pvt. Ltd. is one of the premier business communication solutions provider, Spring Edge's core services includes messaging and voice communications with comprehensive and customized platform for all business scales.

    Cost / License

    • Freemium
    • Proprietary

    Platforms

    • Online
     
  8. engageSPARK icon
     7 likes

    engageSPARK enables anyone, anywhere to build and launch SMS and Voice Call messaging, surveying, and decision tree programs to 200+ countries – within minutes. It is a self-service website where any non-technical person can easily, quickly, and cheaply create messaging...

    38 engageSPARK alternatives

    Cost / License

    • Paid
    • Proprietary

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • Windows Phone
    • iPad
     
  9. Qualifyr icon
     Like

    An AI-powered WhatsApp lead qualification and automation platform that helps businesses identify high-intent leads, automate follow-ups, manage conversations, and improve sales conversions.

    Cost / License

    • Paid
    • Proprietary

    Platforms

    • Online
    • Software as a Service (SaaS)
     
  10. MSG91 icon
     Like

    MSG91 is a customer communication platform that helps businesses connect with customers through SMS, WhatsApp, Email, Voice, and customer support solutions. Its scalable APIs and engagement tools enable seamless communication, customer authentication, and support across multiple channels.

    Cost / License

    • Freemium
    • Proprietary

    Platforms

    • Online
    • Software as a Service (SaaS)
     
  11. Ownchat icon
     Like

    OwnChat streamlines WhatsApp communication for businesses. With WhatsApp commerce, automation, CRM, and notification campaigns, businesses can sell products, automate responses, manage interactions, and send targeted notifications.

    Cost / License

    • Freemium
    • Proprietary

    Platforms

    • Android
    • Software as a Service (SaaS)
     
  12. Fewsecond icon
     1 like

    Fewsecond is a web platform offering Bulk SMS services, Short number and APIs for integration in Web applications and Softwares.

    Cost / License

    • Paid
    • Proprietary

    Platforms

    • Online
     
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