17. Halle Tecco

Company: RockHealth

Twitter handle: @halletecco

“Halle Tecco is a San Francisco resident and social entrepreneur passionate about the intersection of technology and health. She is the founder and CEO of Rock Health, the first seed-accelerator for health apps,” reports the Huffington Post.

18. Leila Janah

Company: SamaSource

Twitter handle: @leila_c

Born in Buffalo, NY, Leila attended Harvard Universities and Graduated in 2005 with a degree in African development studies. Her 2008 founded company Samasource gives digital work to impoverished people around the world.