Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
UptimeRobot - Free Website Uptime Monitoring
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
StatusPage.io - StatusPage.io is the best way for web infrastructure, developer API, and SaaS companies to get set up with their very own status page in minutes. Integrate public metrics and allow your customers to subscribe to be updated automatically.
Plivo - Plivo simplifies your customer engagement.
Freshworks - Delight your customers, from wherever you are