DiskSpeedTest Version 1.0.5.

No signed executables yet. The OSes will be fussy and will complain about security risks. Please ignore.

DiskSpeedTest.exe.zip

Download for Windows. After downloading and unzipping it, make sure to click "More info" in the Microsoft Defender screen.

DiskSpeedTest.app.zip

Download for macOS X. After downloading and unzipping it, make sure to right click on the .app file and select "Open".