Motoron M2U550 Dual Serial Motor Controller - 2-channel DC motor controller (for assembly)

HAT with two-channel DC motor driver for Raspberry Pi. It has an operating voltage from 6 to 24 V and a continuous current of up to 10 A. It can be controlled by a PWM signal or by means of built-in buttons. Cytron HAT-MDD10

Pololu Jrk 21v3 USB Motor Controller with Feedback

This add-on board enables a Raspberry Pi B+, Pi A+, Pi 2 or Pi 3 to drive a pair of brushed DC motors. Its dual MC33926 motor drivers operate from 5 V to 28 V and can deliver a continuous 3 A (5 A peak) per motor. The default pin mappings make it easy to get started using our provided software, but the board also exposes most of the driver chips’ I/O pins for more specialized applications. 

Pololu Dual G2 High-Power Motor Driver 24v18 is an extension that allows you to control two DC motors designed for Raspberry Pi. The motors can be supplied with 6.5-36V voltage and can draw a maximum current of 18A. Pololu 3756

Tiny breakout board for TI’s DRV8838 motor driver can deliver a continuous 1.7 A (1.8 A peak) to a single brushed DC motor. Operating voltage range from 0 V to 11 V, built-in protection against reverse-voltage, under-voltage, over-current, and over-temperature. Pololu 2990

A module with a two-channel DC motor driver based on the TB6612FNG system. Designed for Wemos D1 Mini

Pololu Simple High-Power Motor Controller 24v12 (Fully Assembled)

Shield with dual-channel DC motor driver for Arduino. It has an operating voltage from 7 to 30 V and a continuous current of up to 10 A. It can be controlled by a PWM signal or by means of built-in buttons. Cytron SHIELD-MDD10

This add-on board makes it easy to control two high-power DC motors with a Raspberry Pi. Its twin discrete MOSFET H-bridges support a wide 6.5 V to 36 Voperating range and are efficient enough to deliver a continuous 14 A without a heat sink. The drivers offer basic current limiting functionality, and they accept ultrasonic PWM frequencies for quieter operation.

Shield with dual-channel DC motor driver for Arduino. It has an operating voltage from 7 to 30 V and a continuous current of up to 1.2 A. It can be controlled by a PWM signal or by means of built-in buttons. Cytron SHIELD-3AMOTOR

This Kit with fully-dedicated PWM driver chip handles all the motor and speed controls over I2C. Only two data pins (SDA & SCL in addition to the power pins GND & 5V) are required to drive the multiple motors; you can also connect any other I2C devices or shields to the same pins. This  makes it drop-in compatible with any Arduino, such as the Uno, Due, Leonardo and Mega R3. Adafruit 1438

Module with DC motor driver DRV8256P. It can work with motors supplied with the voltage from 4.5 to 48 V and the current consumption up to 1.9 A. Pololu 4039

A two-channel DC motor controller with a UART TTL interface. It is powered from 4.5 V to 48 V and can deliver up to 1.8 A per motor. Board with connectors for assembly. Pololu 5067

Pololu High-Power Motor Driver 36v20 CS

Atmel ATmega32U4 microcontroller comes preloaded with an Arduino-compatible bootloader, and the board includes dual motor drivers that can deliver 1.7 A per channel to two brushed DC motors. Pololu 3119

The ESC RC controller module is designed for brush motors with a supply voltage from 3.5 to 6 V and a capacity of 1 A