Sysinternals download for Windows 11 and 10: get the free Suite ZIP from Microsoft, pick the x64, ARM64 or Nano Server build, or install it from the Store.
Microsoft Remote download for Windows 11, 10 and Mac: get the free Windows App (formerly Microsoft Remote Desktop), install it and connect to a PC or Cloud PC.
Apache OpenOffice download for Windows 11, Windows 10, Mac and Linux, free from openoffice.org: pick the right file, install it, verify it and fix setup errors.