19. Whitney Wolfe, Bumble
Whitney Wolfe co-founded dating app Tinder but left the company in 2014 after suing for sexual harassment. Inspired by that toxic experience, she created Bumble, a dating app that puts women in charge. Valued at more than $1 billion, Bumble has over 55 million users in 150 countries and now offers networking and friend-finding functionality too.
Wolfe has created a female-friendly workplace that encourages flexible hours and provides robust parental leave and childcare benefits. The app has attracted celebrity investors such as Priyanka Chopra and Serena Williams.