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NSIS (Nullsoft Scriptable Install System) is a tool that allows programmers to create such installers for Windows. It is released under an open source license and is completely free for any use. NSIS ...

A full set of Open-Source tools is available to enable digital, analog, and mixed-signal ASIC design from schematic capture through tapeout. Tools installation is simply a matter of installing a VM ...

I'm cheating on one of these, but hopefully my explanation makes sense.