IMPACT is my favorite code editor font. allows me to make less mistakes.

So, I tried Monaco again, and I feel like that was the font I used before reformat and just didn't realize it. I am currently giving mononoki a chance though! Thanks for all your replies and keep them coming!

I've been using Source Code Pro by Adobe for a couple of years now:

For programming on a retina screen I use Monaco or Hack. But lately I've been trying out a more all-purpose font in Linux (and possibly migrating to it on my mac) called "Envy Code R"

Sauno Mono Pro

I'm a sucker for nice typography, and underware have been churning out great fonts for a while. Sauna Mono Pro is a nice font to read and gives your code some character!

I honestly can not understand how people can read and write computer programs with fonts with smooth edges. Computer programs were born on the pixel raster displays! There's a fine font called Fixedsys Excelsior; it​ looks like an 8x16 pixel font, where in fact it's drawn with TTF outlines. I've added (and keep adding) some programming ligatures to it and can't be happier. https://github.com/kika/fixedsys

Hasklig 💓 it with ligatures enabled 😊

Have you tried Mononoki it is amazing!

Operator Mono

I use Consolas

I use monofur. It is a simple and elegant font with no extravagance.

I explicitly avoid fonts with ligatures (I prefer what I see to exactly be what I save) and fonts with serifs (unnecessary details).

Ubuntu Mono

Fira Code

It's an extension of the Fira Mono font containing a set of ligatures for common programming multi-character combinations. The font looks awesome paired with the right color set. Also, the editor and terminal support is great.

I use the Hack font, because it helps me distinct between similar characters and at the same time boosts readability to a degree that I can use font size 7 on 27" FullHD in order to see an awesome lot of source code at a time. You really should give it a try.

And yes, to a designer's eye it might look ugly, because it was always engineered to be pragmatic :)

Let the font wars begin :-)

Since a super long time, I use Fantasque Sans Mono. The only font I found which has different styles for single quote, double quote, and backtick. Super useful for languages such a JavaScript which support all of those chars.