OS X

Here is my list of applications for quality of life.

From AppStore:

• Amphetamine to keep computer awake;
• MeetingBar - information about next meeting in menu bar;
• Horo for countdowns;
• Velja to choose browser to open links based on app with link or even by regexp;
• Endel for generated background music;
• Microsoft Remote Desktop for RDP.

Independent sources:

• Homebrew is the best OSX CLI package manager;
• iTerm2 is one of the best terminals among all platforms;
• Matrix Screensaver: RedPill2 is best the Matrix screensaver (probable source code location) after one old Windows XP-7 version (fails at newer versions of Windows) IMO;
• Bartender to manage icons in menu bar;
• Viscosity is the best VPN client for OpenVPN;
• XnView MP as image viewer;
• IINA is a great video player.