Quantum Tiny Linux Development Kit consists of a SoM (System on Module) and an expansion board as the carrier board.
The SoM, Quark-N, is based on Allwinner H3, Quad-core Cortex-A7, and ARM Mali400 MP2 GPU. The carrier board (40mmx35mm) adds a microSD slot, dual USB 2.0 host ports, a Type-C port for power, and some golden finger pads for I/O. A small TFT display is mounted on the board along with a motion sensor, user buttons, and a microphone. It also has wireless connectivity (Wi-Fi + Bluetooth).
The kit may be the smallest Linux development board on the market which is suitable for applications such as a personal server, intelligent voice assistant, and robotic development. You have the possiblity to design your own baseboard due to the M.2 interface.
More information in Getting Started and on the website of Seeed Studio.