Dev tools · alternatives · 2026

24 alternatives to Phone Number Verification for Your App Without Using SMS

Validate users across SMS and preferred channels at scale with the Twilio Verify API, a turnkey, passwordless authentication solution that enables seamless and secure user onboarding, reduces fraud, and optimizes delivery rates without the heavy lifting. Twilio handles all your connectivity, channel

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Phone Number Verification for Your App Without Using SMS launched in 2018; newer entries below may have overtaken it.

1. 1
   Phone verification at no cost▲147

   Phone verification at no cost (Deprecated). Contribute to natsu90/dial2verify-twilio development by creating an account on GitHub.

   2016 · github.com · its alternatives →

2. 2
   Verify API by Telnyx▲83

   Secure apps & services with multichannel user authentication

   2021 · telnyx.com · its alternatives →

3. 3
   Prelude Verify▲479

   Verify more users for less cost with our spam-free SMS API

   2024 · prelude.so · its alternatives →

4. 4
   Twilio Frontline▲67

   Connect salespeople to clients with security and compliance

   2022 · support.twilio.com · its alternatives →

5. 5M2
   My 2-Hour Twilio App▲57

   2010 · txt2ping.com · its alternatives →

6. 6
   Twilio for Slack▲190

   Enable SMS conversations with Slack+Twilio

   2020 · clerk.chat · its alternatives →

7. 7
   Twilio Engage▲123

   Build hyper-personalized end-to-end marketing campaigns

   2021 · twilio.com · its alternatives →

8. 8
   VerifyKit▲175

   Verify your users faster and cheaper than ever

   2022 · verifykit.com · its alternatives →

9. 9
   Twilio Notify▲150

   One API to orchestrate notifications across SMS, push & more

   2016 · twilio.com · its alternatives →

10. 10
    Everify▲69

    SMS verification made dead-simple, secure and cheap.

    2021 · everify.dev · its alternatives →

11. 11
    SMS Verification Service▲213

    SMS-Verify.me | secure sms verification made simple

    2025 · its alternatives →

12. 12
    Plivo - SMS API ▲88

    Twilio killer on steroids.

    2014 · plivo.com · its alternatives →

13. 13MZ
    My Zappos/Twilio hackathon entry▲166

    2011 · anonysize.me · its alternatives →

14. 1444
    415-483-1860 twilio-translator▲21

    @andrewacove and i built this in a few hours at the apihackday. if you like it tweet it up. this is mostly for fun, but it should translate any phrase to the best of the twilio transcription service.

    2010 · its alternatives →

15. 15AV
    A virtual phone number for your company based on Twilio▲134

    2017 · thisnumber.rocks · its alternatives →

16. 16
    Twilio Flex▲210

    The programmable contact center platform 📱

    2018 · twilio.com · its alternatives →

17. 17TP
    Twilio Pricing API hack▲28

    2012 · twiliopricing.herokuapp.com · its alternatives →

18. 18
    Instant PhoneCheck API by tru.ID▲64

    The stronger SIM-based alternative to passwords, SMS and 2FA

    2021 · idlayr.com · its alternatives →

19. 19
    Virgil Security▲74

    Build privacy-first apps on Firebase

    2018 · virgilsecurity.com · its alternatives →

20. 20
    Twilio▲31

    Deeply customizable voice and messaging API

    2014 · twilio.com · its alternatives →

21. 21
    SMS Chatbot▲99

    Build your own SMS based text-bot in Botsify.

    2020 · botsify.com · its alternatives →

22. 22
    Text-Sender▲7

    Simple texting application using Twilio API

    2021 · text-sender.vercel.app · its alternatives →

23. 23
    Twilio API for WhatsApp▲6

    The world’s most popular messaging app through one API

    2018 · twilio.com · its alternatives →

24. 24TM
    Textmob - My simple Twilio + GroupMe app▲27

    2011 · textmob.co · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →