Wanderu, a startup travel aggregator (think Kayak) is now offering schedule and fare information for the major U.S. bus lines (Greyhound, Megabus and Boltbus) and has just signed a distribution agreement with Amtrak that will allow them to include most of Amtrak’s intercity train fares as well.
Until now, travelers had to check each carrier separately and figure out the costs and comparisons. The site, wanderu.com, not only compares bus to bus, but (as seen above) lists trains and buses together.