ARM based single board computers that try to suck less. Roughly the same form factor and capabilities of the Raspberry Pi. I'm told that you can just drop Armbian onto a card and boot it up.
Broadcom opensourced the GPU drivers for the RaspberryPi under a three-clause BSD license. The code is fully functional, hasn't been reverse engineered, and can be compiled and used imediately on the RasPi.
The Novena is a completely open source laptop (free and libre') based around the 64-bit quad-core Cortex A9 CPU and Vivante GC2000 GPU. Every single aspect of the project is NDA-free - no licensing fees, no restrictions on what you can do with it or say about it. Full accessible documentation. Tops out at 4GB of RAM. Not available yet but keep an eye out.
open-source hardware laptop netbook novena ARM project free libre
Unicorn is a super-CPU emulator which handles multiple common processor core architectures, from x86 to Arm. Based on QEMU, written in pure C for speed and portability. Has multiple API bindings for different languages. Does just-in-time (JIT) translation of opcodes. Designed from the ground up to be thread-safe.
Homepage for a 64-bit ARM CPU based notebook computer. Two variants: 11.6" and 14" (equivalent to Windbringer). Has all of the features you'd expect of a modern notebook computer. 16GB on board, can be expanded with a microSD card up to 256GB in size.
Homepage for a DIY portable computer.