Several years ago, on a busy holiday weekend, Phanindra Sama actually ran after some Indian bus operators in a failed attempt to catch a bus home. Now, says Sama, "I'm computerizing the bus industry." His company, RedBus, spent years unifying the system--bus operators, tickets, travel agents--and this year unveiled an integrated platform that serves more than 10,000 bus routes. Customers can view open seats from multiple operators, purchase tickets, and post ratings. Meanwhile, bus operators can track seat availability in real time, and travel agents can prebook passengers. RedBus tripled sales last year, adding 4.25 million riders.