What are some alternatives?
When comparing JustCall and BulkSMS, you can also consider the following products
Aircall - Aircall is a call center software of a new generation designed for fast growing companies. Setup instantly and integrates to your CRMs
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
RingCentral - RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies
Twilio - Brings voice and messaging to your web and mobile applications.
8x8 Virtual Office - Use your iPhone, iPad or iPod touch to make and receive calls using your 8x8 Virtual Office phone...
Infobip - A2P messaging platform for enterprises, resellers & mobile operators with global network coverage.