When comparing BeagleBone Black vs BeagleBone Green Wireless, the Slant community recommends BeagleBone Black for most people. In the question“What are the best single-board computers?” BeagleBone Black is ranked 22nd while BeagleBone Green Wireless is ranked 65th. The most important reason people chose BeagleBone Black is:
There are 92 expansion pins, with 46-pin female connectors on both sides of the board with other 6 serial pins to be used for debugging.
Specs
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Pros
Pro Extendable hardware
There are 92 expansion pins, with 46-pin female connectors on both sides of the board with other 6 serial pins to be used for debugging.
Pro On board storage
Has on board integrated storage of 4GB. It can also have an SD card in addition to the integrated storage and can boot from either of them.
Pro Programmable Real Time Units with GPIO control
Real-time coprocessors allow for embedded systems control and bit-banging communication
Pro Analog Inputs
There are 7 1.8V analog inputs.
Pro Responsive, helpful online community
Pro Easy of use
It hosts a web service over USB so it is super simple to get started with plenty of source code and examples available.
Pro Open source hardware
Schematic and board layout available at Seeed Studio's GitHub https://github.com/Seeed-Studio/beaglebone-getting-started/tree/BBGW/Docs/Hardware
Pro BeagleBone Black compatible
Compatible with BeagleBone Black software (with the exception of HDMI and Ethernet).
Pro WiFi and BlueTooth included
WiFi (2.4GHz b/g/n) and BlueTooth (classic and BLE) are both included.
Pro Includes 4 USB 2.0 host ports
Cons
Con Only one USB available for peripherals
There's only one USB port available for peripherals, which is a bit annoying considering how two USB ports is a minimum to have a keyboard and a mouse hooked up without having to use a powered USB hub.

Con Lack of a proper OpenGL driver
It sounds like the driver is possible, but the information is spread out over forums and GitHub.
Con No HDMI port
HDMI port is only available via an addon cape.
