httpSMS is a service that lets you use your Android phone as an SMS Gateway to send and receive SMS messages. You make a request to a simple HTTP API and it triggers your Android phone to send an SMS. SMS messages received on your android phone can also be forwarded to your webhook endpoint.
httpSMS's answer
Go, Vuetify, Google Cloud
SMSAPI - SMSAPI.com is browser platform for bulk SMS and other SMS marketing solutions.
SMSGate App - A secure, open-source solution for sending and receiving SMS messages via Android devices. No registration, email, or phone number required - just install and use.
Twilio SMS - Send and receive text messages globally with Twilio SMS.
Twilio - Brings voice and messaging to your web and mobile applications.
seven.io - Professional solutions for your company to send and receive SMS. Online, via gateway, by email or directly in your app. Easy. Fast. Reliable.
Ozeki SMS Gateway - Ozeki SMS Gateway is a powerful on premise sms gateway software you can install on Windows or Linux. You can send SMS from a database or HTTP. You can provide SMS services using SMPP, UCP, CIMD2, HTTP or using a mobile phone.