PowerToys were free programs under Windows 95/98, with which certain Windows features could be optimized or adapted. Inspired by the PowerToys project under Windows 95, some developers dared to restart. The intended was to give power users the ability to get more efficiency out of the Windows 10 shell and customize it for individual workflows. The announcement tool place at the beginning of May 2019 (Windows 10: PowerToys will come as Open Source). More information can be found in the articles linked at the end of this blog.
The PowerToys known from Windows 9x are also available in the version for Windows 10 Open Source and free of charge.
Bugfix update available for PowerToys 0.14.1
The version 0.14.0 of the PowerToys was withdrawn shortly after the release, as I read here. The reason for the withdrawal was a bug that prevented opening Outlook from Office 365. Outlook got stuck with a black screen.
Now version 0.14.1 of the PowerToys has been released as patch release. The release notes list a fix for FancyZones in addition to the fix for the Outlook start bug. This should prevent that full screen applications are disturbed. Details about the updated version of PowerToys 0.14.1 and the MSI installer can be found at GitHub.