Android
Gravity Defied for Android - native Android port of a legendary J2ME game from 2000s (with grishka)
coreboot
Intel ME Soft Temp Disable support
Dual Graphics mode on ThinkPads
drivers/apple/hybrid_graphics - hybrid graphics driver for Apple MacBook Pro
ec/apple/acpi - some ACPI features for Apple MacBooks
NVIDIA Optimus support - partly (with siro)
ACPI support for battery thresholds on ThinkPads - partly (with derlafff)
mmga - a script to help flashing coreboot on MacBooks without using external SPI programmer
pmh7tool - a tool to read and write PMH7 registers on Lenovo ThinkPads. PMH7 is a gate array used for switching on and off power of some devices on the board such as dGPU or touchpad
smctool - a tool to read Apple SMC keys. Supports various data types and output formats
GMA fixes (1, 2) for Sandy Bridge and Ivy Bridge, Kconfig options for enabling RC6 and RC6p
Support for disabling Intel Hyper-Threading (with Nico H.) (1, 2)
ThinkPad BIOS software flashing guide - a tutorial on how to flash coreboot on IvyBridge ThinkPads without external SPI programmer (and official coreboot doc)
Montevina series documentation - a documentation on X200/T400/T500/X301 boards
SNB/IVB Apple boards internal flashing tutorial - a tutorial on how to flash coreboot on certain Apple boards without SPI programmer
Miscellaneous
tablocation - XUL Firefox addon that adds page URL under the title on every tab. Compatible with Firefox < 57
sketchtrial - never ending trial for Sketch on macOS
swap_workspaces - useful script I wrote for using with XFCE
vkflex-php - native PHP addon for declension of Russian and Ukrainian names and surnames
node-vk-flex - same as previous, but for Node.js
php-router - simple one class php router. The code is not very good and clean though. But I use it in production with 100+ routes on a quite high loaded website and it works fast and well.
drm_master_util - suid helper for Xorg modesetting hack
mojave-permissions - native Node.js addon for checking and requesting media permissions on macOS 10.14
peerflix-deadbeef - wrapper script to use peerflix to listen to music from torrents in DeaDBeeF