Earlier this year, we asked readers to tell us about entrepreneurs building promising businesses that tackle social ills. Over the past few months, we narrowed the more than 300 suggestions we received to 25 for-profit social enterprises. Among our criteria: scope, impact, and the ability to sustain themselves. Read through our picks—then vote for the most promising before July 12 (the voting page is also available at the end of the slideshow). We’ll announce the top five vote-getters on July 19.