PowerShell for every system!
Also it is MIT-licensed open source today: https://github.com/PowerShell/PowerShell
A simple, fun, and interactive way to learn the PowerShell language through Pester unit testing.
It's worth learning at any age, especially now that it is an open-source, cross-platform shell. The PS Koans  that recently showed up on HN seemed an interesting way to try to learn it.
Collect and Analyze Billions of Data Points in Real Time. Manage all types of time series data in a single, purpose-built database. Run at any scale in any environment in the cloud, on-premises, or at the edge.
WinRT/UWP decode BluetoothLEAdvertisement in Powershell 7
3 projects | /r/PowerShell | 18 Jan 2023
Windows Registry mods, advanced tweaking and more
3 projects | news.ycombinator.com | 7 Jul 2022
Customize Windows Terminal and Git operations
9 projects | dev.to | 11 Jun 2022
A Guide to Overengineering a Windows Terminal
10 projects | dev.to | 4 Jun 2022
Start-Job with alt creds fails, but only when run as scheduled task
2 projects | /r/PowerShell | 26 Oct 2021