When comparing HummingBoard Gate vs BeagleBone Black, 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 HummingBoard Gate is ranked 23rd. 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 Same software runs on single to quad CPU without any problems
Since the HummingBoard Gate comes with different versions, including different CPU versions, it can also run the same software without any problem on any CPU regardless of the number of cores.
Pro Some models fit inside a Raspberry Pi case
HummingBoard-Pro and HummingBoard-Base fit inside a Raspberry Pi model B case (but be aware that many cases will block the IR).
Pro Extremely extendable
Hummingboard Gate has a native mikroBUS system which lets users attach any “click board” that’s compatible with MikroElektronika’s system. This way the board can be extended by adding motion sensors, wifi cards, physical buttons, temperature sensors, NFC or Bluetooth and much more.
Pro Can be used as a media streaming device
HummingBoard works really well with Kodi and can be turned into a media streaming device with ease.
Pro Selection of great operating systems
Hummingboard supports OpenELEC 5.0, GeexBox XBMC, Android and Debian officially, but it can also run ArchLinux, openSUSE and Fedora successfully.
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.
Cons
Con Pretty expensive
Starting at $70, prices can go up to $235 depending on the model and the components that users choose to add to the board. For these prices it's rather expensive relative to other single board computers.
Con No built-in Wifi for the cheapest version
The cheapest version of the Humingboard Gate doesn't have a built-in Wifi card. You can either buy it separately as an add-on or you can buy a more expensive version of the Humingboard Gate which has a built-in Wifi card.
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.
