OctoPerf - OctoPerf is a SaaS load testing solution, based on JMeter.
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
WebLOAD - WebLOAD - The most flexible and cost effective software for enterprise load, stress and performance testing, integrated with DevOps processes. Click for details
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
StresStimulus - Load testing tool for websites and mobile that works with hard-to-test applications.
Plivo - Plivo simplifies your customer engagement.