Dev tools · alternatives · 2026

24 alternatives to OtpNinja

Setup OTP API easily

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. OtpNinja launched in 2021; newer entries below may have overtaken it.

1
Apidog Fast Request▲512
Develop APIs fast + automatically detect endpoints
2025 · fastrequest.apidog.com · its alternatives →
2
OTP.com▲36
OTP service for product builders. 4 channels - Single API
Sep 2026 · otp.com · its alternatives →
3
Simple OTP 2.0▲131
Passwordless, source-code-included auth for your website
2024 · its alternatives →
4
GenerateOTP▲90
A simple API to generate and validate OTP codes
2019 · its alternatives →
5
OTP.io▲26
Verify users over SMS, WhatsApp and Email, Globally
2024 · otp.io · its alternatives →
6
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 →
7
Simple OTP▲104
Simple passwordless authentication for your website
2023 · its alternatives →
8
WhatsApp OTP Verification▲4
Send OTPs via WhatsApp with one blazing fast, low-cost API.
Nov 2025 · rapidapi.com · its alternatives →
9
Integuru▲161
Hey HN! We’re Alan and Richard from Integuru (YC W24). We generate fast, reliable integrations for platforms lacking official APIs. About 2 years ago, we released the first agent that reverse-engineers network traffic to build integrations (https://github.com/Integuru-AI/Integuru). Since then, we’ve developed a new approach to reverse-engineer platforms’ source code directly. This solution also includes authentication support. Here’s a demo: https://youtu.be/4l2L8fILC2g?si=nbWbDiFrWZIWRPM7. Many AI products need to integrate with web apps, but platforms…
May 2026 · integuru.com · its alternatives →
10
Monika▲78
Open source and free HTTP monitoring tool
2022 · monika.hyperjump.tech · its alternatives →
11
Venmo Unofficial API▲92
An unofficial API for Venmo. . Contribute to Integuru-AI/Venmo-Unofficial-API development by creating an account on GitHub.
2024 · github.com · its alternatives →
12
WhatsAuth▲72
Frictionless WhatsApp login & OTP for NextGen security
2023 · whatsauth.com · its alternatives →
13GC
Get calls on mobile, skype when a website is down▲16
NotifyNinja saves your website and servers from a big downtime. You and your team will be first who will know about problems with your websites
2014 · notifyninja.com · its alternatives →
14
Verify API by Telnyx▲83
Secure apps & services with multichannel user authentication
2021 · telnyx.com · its alternatives →
15
Ots – share a secret via one-time URL▲77
🔐 Share end-to-end encrypted secrets with others via a one-time URL - sniptt-official/ots
2021 · github.com · its alternatives →
16
monitro.dev▲117
Simple & cheap log alerting
2024 · its alternatives →
17
auth.▲66
2FA , MFA, OTP, Secure Code for Apple devices
2021 · auth.startway.io · its alternatives →
18
Ots – share a secret via one-time URL (a simple Go CLI)▲19
🔐 Share end-to-end encrypted secrets with others via a one-time URL - sniptt-official/ots
2021 · github.com · its alternatives →
19
OTPfy▲60
Securing applications
2022 · otpfy.com · its alternatives →
20
WhaOTP▲2
Create WhatsApp OTP in 2 API calls. Free for devs.
Jun 2026 · whaotp.site · its alternatives →
21
OTP Gateway▲4
Reliable OTP Forwarding
May 2026 · otp-gateway.com · its alternatives →
22
Email OTP / 2FA by Dexatel Verify▲22
Verify users safely with Email OTP fallback
Oct 2025 · dexatel.com · its alternatives →
23
Phone-verif.com public opening▲8
Reverse-OTP phone verification over WhatsApp
Jul 2026 · phone-verif.com · its alternatives →
24
RUSTWA▲36
A Unofficial WhatsApp Web API built in Rust
Jan 2026 · gitlab.com · its alternatives →

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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 →