Writing a monitoring plugin for icinga using their Powershell framework
If you know how to write monitoring plugins, you will have a more efficient monitoring of your system.
The Brother ADS 1200 is a small but inexpensive scanner. With a few hacks, you can turn this into a productivity machine for your home office.
Nextcloud's High Performance Backend accelerates messaging on larger systems. Connected clients no longer need to poll to see changes to files. Instead, notifications actively inform applications of file changes.