These are fixed-width fonts converted to TTF and FON format from the original X11 sources. You will recognize them as being the default fonts in xterm - they are widely used. They are especially useful for console apps. We programmers can't live without them!
The main problem you'll encounter is that, some of them being FON files, they are not usable in all Windows programs. This has been a big issue for a long time but recently I added some Windows TTF format that work really well.
Etichette: console, FON, font, Linux, microsoft, TTF, Windows