31. InsideSales.com

Founders: Dave Elkington, Ken Krogue
Launched: 2004
Funding: $299.3 million
Valuation: $1.4 billion
Disrupting: Sales and marketing, enterprise software
Rival: Velocify

Dave Elkington, founder and CEO of InsideSales.com
Source: InsideSales.com
Dave Elkington, founder and CEO of InsideSales.com

No matter how sophisticated technology gets, one challenge remains for nearly every business: figuring out the best ways to connect with customers. That's where InsideSales.com can help. The Provo, Utah-based company is a provider of predictive analytics services for salespeople that helps them source and close deals.

Read MoreFULL LIST: 2016 DISRUPTOR 50

The company claims that what sets it apart from other big data analytics companies is the sheer size of the data pool that it taps into to give suggestions to customers. InsideSales' sales platform — called Neuralytics — uses more than 14 billion sales interactions to not only identify the best leads and prospects but also how best to get in touch with them and even what words to use to close more deals.

The company counts about 2,000 customers that use its service, including ADP, Sprint, Fidelity, Groupon and Microsoft.

InsideSales' investors, including Salesforce Ventures and Microsoft, have poured in close to $300 million in funding to date. The company says the money is being used to expand its presence outside the United States. It recently opened an office in London.

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