Slack & Flickr: Stewart Butterfield

Ridesharing wasn't a thing 12 years ago when John Zimmer was in college. But a class on green cities got him thinking about the glut of underused cars on the road, and eventually led him to co-found Lyft, a company that has helped make ridesharing a way of life. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

13 Helmi 201739min

A 1991 conversation at a Mexican restaurant led Kate & Andy Spade to ask, "What's missing in designer handbags?" Kate's answer was a simple modern-shaped handbag that launched the iconic fashion brand: Kate Spade. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

6 Helmi 201739min

Richard Branson took a record shop and built it into a label, a bank, an airline, space tourism, and 200 other businesses — all under the name Virgin. But the serial entrepreneur has also had his share of failures. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

30 Tammi 201733min

Computer scientist Tony Hsieh made millions off the dot-com boom. But he didn't make his mark until he built Zappos — a customer service company that "happens to sell shoes." Now Zappos is worth over a billion dollars and known for its completely unorthodox management style. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

23 Tammi 201728min

In 1997, after going for a long run, Seth Goldman was frustrated with the sugar-filled drinks at the corner market. So he brewed up a beverage in his kitchen, and turned it into Honest Tea. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

16 Tammi 201729min

A decade ago, full-time mom Alli Webb noticed a gap in the beauty market: there was nowhere that just focused on blow-drying hair. Now with 70 locations, Drybar is testament to Webb's motto: Focus on one thing and be the best at it. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

9 Tammi 201732min

Zumba began as a mistake: aerobics teacher Beto Perez brought the wrong music to class, then improvised a dance routine to go with it. For his students, it was more fun than work — and it eventually grew into one of the biggest fitness brands in the world. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

2 Tammi 201737min

In 2008, it was nearly impossible to buy a fashionable, affordable pair of glasses online. That simple frustration inspired the idea behind Warby Parker – and disrupted the eyewear industry. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

26 Joulu 201630min