The L298 is a classic dual h-bridge chip. It is capable of driving motors at 2 amps continuous output, and 3 amps peak. The L298 is great for driving two-motor small robots with differential steering. It is also great for driving larger bipolar steppers (you need two H-bridges to drive one stepper).
The L298 has output enable lines and separate ground connections to the H-bridge – that are good for current sensing lines.