Over the 15+ years I've been using GNU/Linux, there are many programs that have become second nature to me. As a hacker, I enjoy tinkering with my system---why use a desktop environment when I could do the same thing with 100s of programs and hand-written scripts...!?
Each day I feel up to it, I'll give thanks to a free/libre program that has made a positive impact on my life, from every corner of my operating system, with the hope that others will find them interesting too.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko