Udoo x86 Ultra - Udoo x86 Ultra is a modern PC, known as the most powerful X86 maker board and an Arduino 101 compatible platform.
esp32 - A very cheap small chip, compatible with Arduino.
Intel NUC - Intel NUCs are available as Kits(Barebones), Boards(Mainbaord only) and as perconfigured Mini-PCs.
HummingBoard - Fly high with your ultimate IoT platform
Intel NUC boards - Four-by-four inch Intel NUC boards come with a soldered-on processor.
Banana Pi - Banana Pi is a single-board computer made in China. It can run Android, Ubuntu and Debian.