Microcontroller development boards

You might also want to take a look at this List of Arduino boards and compatible systems

Name	Price	Architecture	Processor	Flash	RAM	Expansion	Command-Line	Graphical IDE	Arduino-like IDE	# of GPIO	# of A/D	Max A/D bits	Max A/D speed	# of D/A	Max D/A bits	Max D/A speed	# of PWM	USB	Other HW
Launchpad (v1.3, v1.4)	EOL	MSP430	MSP430G2231 MSP430G2211	2KB	128	20-pin Boosterpack	GCC	CCS (Eclipse)	No	10
Launchpad (v1.5)	$9.99	MSP430	MSP430G2553 MSP430G2452	16KB 8KB	512 256	20-pin Boosterpack	GCC	CCS (Eclipse)	Energia	16	8	10
Stellaris Launchpad	$12.99	ARM Cortex M4F	LM4F120H5QR	256K	32K	40-pin Boosterpack	Yes	CCS (Eclipse) Atollic (Eclipse)	Energia
Tiva C series Launchpad	$12.99	ARM Cortex M4F	TM4C123GH6PM	256K	32K	40-pin Boosterpack	Yes	CCS (Eclipse) Atollic (Eclipse)	Energia
STM32F4DISCOVERY	$14.25	ARM Cortex M4	STM32F407VGT6	1MB	192KB		Yes	Atollic (Eclipse)	Can be made to work
STM32F3DISCOVERY	$16.2	ARM Cortex M4	STM32F303VCT6	256KB	48KB		Yes	Atollic (Eclipse)
STM32VLDISCOVERY	$9.68	ARM Cortex M3	STM32F100RBT6	128KB	8KB		Yes	Atollic (Eclipse)	Patched Maple IDE
STM32F0DISCOVERY	$7.83	ARM Cortex M0	STM32F051R8T6	64KB	8KB		Yes	Atollic (Eclipse)
STM32L-DISCOVERY	$11.76	ARM Cortex M3	STM32L152RBT6	128KB	16KB		Yes	Atollic (Eclipse)
Maple	$45	ARM Cortex M3	STM32F103RB	120K	20K	Arduino shield			Maple IDE
Maple Mini	$35	ARM Cortex M3	STM32F103CBT6	120K	20K	DIP module			Maple IDE
Olimexino-STM32	20EU	ARM Cortex M3	STM32F103RBT6	120K	20K	Arduino shield			Maple IDE
chipKIT Uno32	$26.95	PIC32	PIC32MX320F128	128KB	16KB	Arduino shield		MPLAB-X (Netbeans)	MPIDE
chipKIT uC32	$34.99	PIC32	PIC32MX340F512H	512KB	32KB	Arduino shield		MPLAB-X (Netbeans)	MPIDE
chipKIT Max32	$49.50	PIC32	PIC32MX795F512	512KB	128KB	Arduino MEGA shield		MPLAB-X (Netbeans)	MPIDE
Olimex PIC32-Pinguino	19.95EU	PIC32	PIC32MX440F256H	256KB	32KB	Arduino shield			Pinguino (99% SW compatible)
Embedded Pi	34	ARM Cortex M3	STM32F103RB	128K	20K	Arduino shield Raspberry Pi Compatible

Arduino-derived development systems:

• Energia
  

Forked Arduino development systems with MSP430 Launchpad, Fraunchpad, and Stellaris launchpad support added.

• MPIDE
  

Forked Arduino with PIC32 support added.

• Maple IDE
  

Forked Arduino with support for Leaflabs STM32F1-based Maple and Maple-mini boards added. Patches exists for other STM32-F1 board, as well as STM32-F4 support.

My take on this (Udi):

• MSP430 is dead, as the only reason to buy it in the first place was the $4.30 original price on the Launchpad. Now that the price has rose to $10 and you can get Arduinos for less, why bother? Unless you absolutely need a DIP chip, go buy something else.
• ST's own STM32 discovery board series gives great value for their price, and are clearly sold at a loss to grab developers mindshare, however, they have no full support by an Arduino fork. We have the Maple software but it is being developed by leaflabs who are probably interested in supporting their boards only. The major hurdle in using ST's boards with Maple is that they probably have a different bootloader protocol (ST/LINK) than the leaflabs boards.
• The PIC32 boards were interesting when they came out, but now that we have Arduino based and Arduino compatible ARM boards that costs less, why bother?
• the Stellaris launchpad series is interesting because they give a complete ARM based solution at $13 that can be programmed with an Arduino-like environment

TODO:

• Add links for CooCox GUI
• Add new CooCox boards
• Add Olimex boards
• Add pinguino boards and IDE