Aupad
Notepad written in AutoIt
...I have included the source code for your pleasure, and feel free to give me pointers if you'd like to help out development (This is all done with AutoIt version 3.3.12.0).
run the install to put the AuPad.exe & aupad.ico in the program files directory under AuPad.
Also, the install puts the RESH.au3 (all thanks to Beege) UDF into your include folder for you.
Included in the .zip: Install.exe, Install.au3, AuPad.au3, AuPad.exe,
aupad.ico, uninstall.au3, Uninstall.exe, and RESH.au3.