I just added the text editor section with Notepad++.
Slightly related, one of my all time favorite resource sites for finding alternative software packages, such as we have listed in the free resources & downloads.
Great when you can't get management to fund a full copy of Photoshop to do a simple picture edit.
It lists out resources like we have above for different alternatives, commercial and open-source/free/etc.
Not all solutions are comparable in capability, but it's a good tool to start research.