Abhinav Asthana, Ankit Sobti, Abhijit Kane, 

As coding interns at Yahoo! in 2012, Asthana and Sobti faced a problem common among developers—testing APIs (application programming interfaces, which let software products ‘communicate’). Asthana worked on this as a side project, and the first iteration of Postman was a Chrome app. Its simple and user-friendly interface caught on like wildfire, and Asthana, along with Sobti and Kane, set up Postman in 2014. While wellregarded among developers, it was relatively unknown more broadly. That changed last year when it raised $150 million at a $2-billion valuation, making it India’s fourth SaaS unicorn.