Liberation Mono vs Fantasque Sans Mono

Liberation Mono works well with hinting on high-resolution displays.

Metric-compatible with Monotype Courier New, dot 0 (zero), modern non-Kettler lowercase l (ell), 660+ glyphs, OFL-1.1 license

Just like Courier New (the metrics of which this font emulates), its line height isn't too big, which results in more lines on the screen, compared to Consolas and several other more popular fonts.

The handwritten-style italics of Fantasque Sans Mono are quite attractive.

Fantasque Sans Mono is open source, meaning it can be freely used, changed, and shared by anyone.

As a "Mono" font, Fantasque is uniform in size and overalls. However, if you look further into all characters, you'll find that there's almost no pattern between them - except for the huge amount of curves. That said, this font is a very strong contender in terms of readability, especially in a world that seeks pattern (often too much).
An example:
Double single quotes vs single double quotes. In JavaScript code, you can find empty String initialization a lot. Unless syntax highlighting makes it clear, it's pretty hard with other fonts to spot the difference between double single quotes and single double quote.

There's support for OS X, Linux, and Windows (otf, ttf) in Fantasque Sans Mono.

It looks distinct, playful. But don't cross the line when it becomes unusable.

This is good for those who wish to use different designs of a certain character.

Alpha version supports ligatures as Fira Code does.

The Height line is quite short but coherent. You have to like the style but this is one of the most readable at a small size ( 9pts ).

This is useful for those who wish to use letters from certain Eastern European or Asian alphabets.

Webfonts, such as eot, svg, and woff, are included in Fantasque Sans Mono.