FREEDOM251

Freedom251 › Business Operations

Free and open first

Best Phone Verification Software in 2026

Phone verification software helps confirm phone numbers with SMS or voice checks and one-time passwords. This list is for people adding verification to a website, app, or service through web tools or APIs, with options for iOS and Android.

  1. 1

    Bird Verify

    Free plan APIWeb

    Bird Verify offers several code-delivery channels and controls for verification sessions and workspaces. Account for message charges and country-specific channel availability when planning its use.

    7.4 From $0.00 Visit site
  2. 2

    Gupshup

    by Gupshup
    Free plan APIWeb

    Gupshup combines conversational agents, campaign tools, channel support, and human escalation.

    7.3 From $0.00 Visit site
  3. 3

    Sinch Verification API

    Free plan AndroidAPIiPhone+1

    Sinch Verification API offers several phone-based verification methods and developer access through REST and mobile SDKs.

    7.2 Visit site
  4. 4

    Plivo Verify

    Free plan APIWeb

    Choose Plivo Verify if your direct brand needs configurable OTP delivery and Fraud Shield, and can meet the monthly commitment.

    7.0 Visit site
  5. 5

    2Factor.in OTP API

    Free plan Web

    Choose 2Factor.in OTP API if a web based OTP service with a free sandbox, REST API, and SDKs fits your evaluation or implementation needs.

    6.7 Free plan · paid from ₹4,999/mo Visit site
  6. 6

    Hi-Send OTP Service

    Free plan Web
    6.1 Free plan Visit site
  7. 7

    MSG91

    Paid AndroidAPIiPhone+1

    MSG91 combines transactional SMS, campaign features, developer resources, and a broad list of integrations.

    5.9 Visit site
  8. 8

    Veriph.One Phone Verification SDK

    Free plan AndroidiPhoneWeb
    5.7 Free plan · paid from $15/mo Visit site
  9. 9

    Twilio Verify

    Free trial APIWeb

    Twilio Verify provides a broad set of verification channels and controls through an API.

    5.6 From $0.05 Visit site
  10. 10

    ValueFirst RCS Business Messaging

    Paid APIWeb

    Choose ValueFirst RCS Business Messaging if your business wants branded RCS conversations with rich media, suggested replies, and customer actions.

    4.8 Pricing on request Visit site
  11. 11

    Dollu Voice API

    Paid
    4.5 Pricing on request Visit site
  12. 12

    Noxitel OTP API

    Paid Web
    4.5 Visit site
  13. 13

    otp.com

    Paid AndroidiPhoneWeb
    4.5 From $0.00 Visit site
  14. 14

    Telesign Verify

    Paid AndroidiPhoneWeb
    4.5 Visit site
  15. 15

    Infobip 2FA

    Paid Web
    4.4 60-day trial Visit site
  16. 16

    Clickatell Verify

    Paid
    4.3 Pricing on request Visit site
  17. 17

    OTP.dev

    Paid Web
    4.3 Visit site
  18. 18

    OTP Gateway

    Paid Web
    4.3 Open source Visit site
  19. 19

    Prelude Verify

    Paid Web
    4.3 From €0.03 Visit site
  20. 20

    Vonage Verify

    Paid Web

    Vonage Verify offers two paid approaches to messaging-based verification.

    4.3 Visit site
  21. 21

    Telnyx Verify

    Paid Web
    4.2 From $0.03 Visit site
  22. 22

    Route OTP

    Paid
    3.9 Pricing on request Visit site
  23. 23

    Twenty5 OTP & Verification API

    Paid Web
    3.9 From 15 NGN Visit site
  24. 24

    Voxology Verify API

    Paid
    3.6 From $0.02 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

Compare free plans, trial terms, and paid starting prices before choosing. If you need to read or change code, check the licence; also check country coverage, verification methods, API access, and OTP expiry controls.

Questions

Do phone verification tools offer free plans?

Yes. A free plan is offered by services on this list, but features and limits depend on the tool.

Are free trials available for phone verification software?

Yes. A free trial is offered by services on this list. Check the trial period and what happens when it ends.

Can these tools verify by voice call?

Voice verification is a comparison field for this category. Check the product details to confirm voice support.

Can I use an API for phone verification?

API access is a comparison field. Services may run through an API or on the web, with platform options including iOS and Android.

What should I check about OTP expiry?

Compare OTP expiry control so codes remain valid for an appropriate time while users complete verification.

Is there an open-source option?

OTP Gateway is listed as free and open source. Review its licence before reading, changing, or distributing the code.

More in Business Operations