Do you use windows? If yes you have to use AutoHotkey ! Is a free, open-source scripting language for Windows that allows users to easily create small to complex scripts for all kinds of tasks such as: form fillers, auto-clicking, macros, etc.

Here I've published my small collection of AutoHotkey scripts. Some scripts are written by me, some are modified by me, some are completely created by others.

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Code:

• ∘ MouseToShiftAndCtrl.ahk - I have a chinese mouse with two buttons on it. I decided to remap their function as ctl and shift. These are extremely useful while 3D modelling, especially if you use Fusion360 or SolidWorks.
• ∘ ItalianKeyboardLimits.ahk - Italian keyboard layout misses important and useful keys, let's add them back. I only included the ones I use the most, but suggestions are welcome.