godfreyd / mono

Free and open-source monospaced font from Evil Martians

Martian Mono

Martian Mono is a monospaced version of the Martian Grotesk font for code style design. It inherits Grotesk’s brutal and eye-catching aesthetics as well as all of its benefits—metrics equilibrium, readability and intelligibility, and convenience for web developers and designers who believe in a systematic approach to design.

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Get your Martian Grotesk free trial on Gumroad or buy it on MyFonts.

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The typeface features a tall x-height, and it has vertical metrics which guarantee equal space is present above the cap height and under the baseline. The latter makes this typeface an on-screen workhorse: it is evenly placed on buttons, inputs, lists, and forms. When coupled together, all the above features make Martian Mono a reasonable choice for any user interface design.

When choosing a font format, prefer ttf for variable and otf for static on macOS, and ttf for Windows.

Download

Download the latest package from the releases page.

Styles

Martian Mono consists of a variable font and 28 styles: Condensed to Semi Wide, Thin to Extra Bold.

The font has 4 styles on the width axis:

Short name	Full name	CSS percentage	CSS keyword
sWd	Semi Wide	112.5%	semi-expanded
Std	Standard	100%	normal
Nr	Narrow	87.5%	semi-condensed
Cn	Condensed	75%	condensed

And 7 weights:

Short name	Full name	CSS numeric	CSS keyword
Th	Thin	100
xLt	Extra Light	200
Lt	Light	300
Rg	Regular	400	normal
Md	Medium	500
Bd	Bold	700	bold
xBd	Extra Bold	800

OpenType features

Font size and legibility

Originally designed for the screen, the glyph heights stick to the pixel grid on commonly used font sizes. In addition, it comes equipped with OpenType and TrueType hinting, and Martian Mono appears legible on most platforms, even when being rendered in small sizes.

For the best results use the following pairs of size / line height:

• 7.5 / 10 (or 14, 18, etc.) px
• 10 / 12 (or 16, 20, etc.) px
• 12.5 / 14 (or 18, 22, etc.) px
• 15 / 20 (or 24, 28, etc.) px

Roadmap

• Coding ligatures (blocked by Glyphs app bug)
• Powerline symbols
• Cyrillic script for Bulgarian, Serbian, and Macedonian
• Italics

Support

If you want to support Martian Mono:

• Spread the word on social media
• Buy Martian Grotesk on MyFonts or Gumroad
• Consider becoming a patron

I’m sincerely grateful for any support!