17.2
Gupshup provides conversational AI for marketing, commerce, and customer support automation.
Free planWebAPI
Alternatives to OTP Gateway
26.9
Sinch Verification API provides phone number verification and multi-factor authentication for app sign-up, login, and password resets.
AndroidiOSWeb
36.6
MSG91 provides an SMS API for business communications, including sending and receiving messages.
AndroidiOSWeb
- 4
Twilio Verify
WebAPI6.3 - 5
2Factor.in OTP API
2Factor.in OTP API is a web service for working with one-time passwords through a REST API and SDKs.
Free planWeb6.2From ₹4,999 a month - 6
Bird Verify
Bird Verify confirms control of a phone number or email address by sending a code and checking the response.
Free planWebAPI6.2Free plan - 7
Plivo Verify
Plivo Verify is an API for sending and validating one-time passwords used in two-factor authentication.
Free planWebAPI6.2Free plan - 8
ValueFirst RCS Business Messaging
ValueFirst RCS Business Messaging lets businesses send branded, conversational messages through RCS.
WebAPI5.7 - 9
Telesign Verify
AndroidiOSWeb5.5 - 10
otp.com
AndroidiOSWeb5.2 - 11
Veriph.One Phone Verification SDK
AndroidiOSWeb5.2 - 125.1
- 13
Infobip 2FA
Web4.8 - 144.8
- 154.7
- 164.7
- 174.6
- 18
OTP.dev
Web4.6 - 194.6
- 204.5
- 214.3
- 224.3
- 234.3