There’s a reason innovation comes slowly. It’s hard. It’s hard for those with new products to get customers to ditch their old suppliers. It’s hard for travel managers to get buy-in (ahem, money) from higher-ups and to get adoption from end users. The physical law of inertia applies, as well, to running a travel program: You need a force sufficient to bounce your program out of its status quo. Here are six compelling new travel suppliers whose missions—to streamline expense auditing, protect travelers, improve the travel experience, ease booking, improve adoption and even reinvent the entire travel-buying economy—might do the trick.