ANKIT SOBTI, ABHINAV ASTHANA, ABHIJIT KANE, 

Postman, cofounded by Sobti (in pic) was named the No.1 utility tool of 2017 by StackShare, a platform for comparing software, toppling Google Analytics. It is a tool for developers to test their application programming interface, or API—a set of rules, or codes, that let different software interface with each other. Over 1 lakh firms use its services to access 120 million APIs each month. The company says it tripled its paying customers in 2017.