Android
Gravity Defied for Android - native Android port of a legendary J2ME game from 2000s (with grishka)
coreboot
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
ThinkPad BIOS software flashing guide - a tutorial on how to flash coreboot on IvyBridge ThinkPads without external 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