For Forbessecond annual list of next billion-dollar startups, we’ve found 25 companies that are transforming their industries and showing tangible results.

TrueBridge asked 180 venture firms to nominate startups and to encourage their portfolio companies to nominate themselves.

Not surprisingly, many of the companies are straight technology plays, like Fuze, a fast-growing competitor in theUnified communicationsmarket, helping companies consolidate voice, video and digital messaging data in the cloud, and Sisense, which sells big data analytics software to customers like General Electric and Target.

Trained as a software engineer, Dickey, 33, founded a company when he was 23 that produced a popular multi-player social network game called Dope Wars, which he sold to Zynga in 2008.

Founded six years ago by two veterans of ArcSight, a cyber-security company acquired by Hewlett-Packard, today it’s run by Ramin Sayar, 44, who joined as CEO in 2014 from VMWare, a virtualization software company, with the goal of building the company.

Two of the founders, Athani Krishna and Hari Subramanian, both 46, are natives of India who came to the U.S. to work as software engineers and started the company in Pleasanton, CA nine years ago.

A native of Portugal, Paiva started the company in Lisbon shortly after graduating from college but moved it to San Francisco after a California investor saw his YouTube video describing the company and offered $10,000 if he would relocate.