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Picaxe

Windows

 
Picaxe Editor 6
AXE027 USB Cable Drivers Zip
These can be tricky to install. Start by extracting the Zip file and then copy the whole folder to c:\windows\INF, Now plugin the USB Cable and hopefully the drivers auto install.
Otherwise plug in the USB and then open device manager (On Windows 10 press WIN + X keys together and select Device Manager) Select the device with an issue and right-click update driver, browse to the extracted driver files. For further details try THIS
Web Install Link

Mac

 
Web Install Link