Sending SMS OTP to mobile - Trail offering websites

Below are the websites you can use for sending the SMS to mobile and they have limited trail limit

1. 2Factor

SignIn and Get 50 SMS as trail offer: https://2factor.in/

API Documnet:  https://2fa.api-docs.io/v1/send-sms-otp/sending-sms-otp-auto-generated-otp

Supports : Shell,Go,Java,Javascript,Node,Obj-C,PHP,Python,Ruby,SwiftC#,C

2. Fast2SMS 

SignIn and Get 50rupeees(20 paise per sms) SMS as trail offer-https://www.fast2sms.com/dashboard/dev-api

API Documnet:  https://docs.fast2sms.com/#post-method

Supports : API Request