Twilio - Brings voice and messaging to your web and mobile applications.
Cat As A Service (CATAAS) - A REST API to spread peace & love (or not) thanks to cats 😸
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
This Cat Does Not Exist - Computer generated cats. Refresh to get a new one.
Clockwork SMS - Clockwork is an Easy Text Message API. An SMS API for Developers. Build powerful apps and include SMS. Signup is free, Try it now.
puRRing - Cute cat videos with every incoming call on your Android