A credit-card sized computer that is becoming a big hitter in the IoT and educational space. And given that it's priced at only $35, it's easy to see why it's so popular.
The latest version is the Raspberry Pi 3 model B and features the following spec:
The Raspberry Pi gets even smaller, in both size and price. At only $5, this is almost a disposable computer, and yet is has enough power to handle many IoT or homebrew projects.
Despite the size, there's room for a microSD card slot, mini HDMI port, and micro USB data port.
A coin-sized Linux computer that is totally open-source, and costs $20. This is a small, low-cost, totally open-source (both the hardware and software) computer that's ideal for projects such as IoT or building your own custom router.
A Windows 10 computer that can fit into your pocket. All you need is display that has an HDMI port and some wireless peripherals and you're ready to go!
Priced at around $99.
At $155 this is a bit pricier than many other small computers, but it does come with beefier specs to allow it to cope with more demanding tasks.
At $9, C.H.I.P. is a perfect demonstration of how cheap computing has become. You get what would only a few years ago have been desktop power on a tiny board.
If you want to take Google's Chrome OS for a whirl, then why not pick up a palm-sized Chromebox, such as this Asus Chromebox. Starting at around $150, these represent excellent value for money.
Like tiny computers, but hate the fact that there's no way to upgrade them? The Acer Revo Build might be the system for you. You add to this system by snapping on new parts, such as the optional storage or graphics modules.
For $179 you get:
For those of you looking for a small Linux system, the MintBox Mini might be just what you are looking for. At $295 it's not cheap, but you do get quite a decent spec: