This HG7881 Dual Channel 0.8A H-Bridge Motor Driver Module is an inexpensive but effective solution for driving up to two motors at continuous 0.8A current.
The L293 Motor Driver Module is an effective but inexpensive driver module that is capable of driving 2 stepper, 2 servo or 4 brushed motors with Arduino.
This is a simple dual DC motor driver based on the proven L298N dual h-bridge IC. You can drive this board directly from your Arduino(TTL level signaling) and it allows you to control direction (and speed if you PWM the enable pin!) separately of 2 DC brushed motors at up to 2A and 35VDC per channel!! It is also possible to bridge both channels and be...
The TB6612FNG Dual H Bridge Motor Driver is capable of running two DC motors simultaneously, with impressively low voltage and current requirements.