Best OTP software
11 tools with AI-ranked alternatives, pricing, pros and cons.
D7SMS
D7SMS is a reliable SMS API service for sending messages globally. It provides easy integration with...
GateKeeper Proximity
GateKeeper Proximity is a wireless key that automatically locks your computer when you walk away and...
SMSCountry
SMSCountry is a business messaging platform for promotional SMS, transactional alerts, OTPs, and SMS APIs. It...
VerifyKit
VerifyKit is a phone-number verification service for developers building mobile and web applications. It provides API-based...
Dexatel
Dexatel is a communications platform for businesses that provides SMS, voice, messaging, and verification services through...
SoundLogin
SoundLogin is a two-factor authentication tool that transfers one-time verification codes through an audio signal from...
OTPfy
OTPfy is an online service for implementing one-time-password verification in user authentication flows. It is intended...
WAuth.in
WAuth provides WhatsApp-based user authentication for applications, enabling login and verification flows through a user's WhatsApp...
The SMS City
The SMS City is an India-focused business messaging platform for bulk promotional and transactional SMS, OTPs,...
Simple OTP
Simple OTP is an OTP verification service for developers adding one-time-password authentication to websites and applications....
Prelude.so
Prelude is a developer-focused API for phone verification and transactional SMS, aimed at teams building user...