Several, for my work as translator: for example a short autoIt program to create and log translation projects, a short autohotkey program to write different types of smart quotes and n and m dashes in the programs I use to write my translations, a Python program to create and log estimates. Nothing major (all my programs are a few hundred lines of code max.) but they are all programs that I use on a daily basis, in fact they are among the programs I use most frequently.