I love this hyperlegible one from the Braille Institute: https://www.brailleinstitute.org/freefont/

Shout out to 0xProto! Texture healing in a monospaced font is super cool!

There are too many to mention since there's so much out there.

You can go to a font website like dafont and perform a search for a font or browse different themes/styles and specify in the results that you want Public domain / GPL / OFL fonts.

Almost all of my fonts are released under an attribution license, so they're free for commercial use and remixing.

https://michaelwmoss.com/typefaces

Agave. My favorite monospace/programming font. What I like best about it is how the baseline isn't where the descenders begin. Makes it look unique in a nice way.

For those who love comic sans I might have bad news: you might be borderline dyslexic.

Switching to OpenDyslexic 3 helps

M+ 1m has been my daily monospaced font ever since I found it, which is about eight years now. I don't see it come up often when people talk about monospaced fonts.

I see lots of links here but no reasons why each is underused or anything.

Look, I'm a simple person, what I ask of a font is:

• differentiate your symbols — I'm talking 1, l, I, and i with more than a single pixel difference at 11pt 90DPI, and the 0 should be clearly less round than O
• be readable. No extra thinness, fancy swirls... look at any default font as an example (Arial or whatever), or most people's custom web font as a counter-example
• proportionally spaced. I like \thinspace as thousand separator and I cannot lie
• indefinitely usable (for example as part of a game) after a single purchase that I can do as a consumer. Or free/donationware of course

A very tall order I know. So far I've reviewed a bunch of fonts (I wasn't procrastinating why do you ask) and found PT Sans is the best option I've seen, so I'm using it, but I hate its Q. It's basically an O with a tilde below it. Any better options if all you want is clarity and normalcy?

Edit: near the bottom of the replies there's Hyperlegible. Somehow I had read over that. Seems to check the boxes! I'll be looking at this closer on my computer later.

This is a new one: https://github.com/sayyadirfanali/Myna/

I don't know it it's underused, but my go to for years gas been League Spartan from The League of Moveable Type

Muli !

My favourite

Search at http://openfontlibrary.com/

Victor Mono

It's freeware not open source but I like Monofur. Might not be the most beautiful font but I find it very legible and the distinction between similar characters is quite good. It's available in the Debian/Ubuntu repositories too.

I'd say several fonts on Google Fonts (the only place I know lol) are pretty good. I don't see them mentioned anywhere and I'm not a font enthusiast per se, so I'd call them less known. Some of my favourite - Courier Pro, Doto, Sono, SUSE Mono, Josefin Slab, and Martian Mono.

And a couple others default on my Windows PC that I like: Bookman Old Style, Yu Gothic (Fun fact - this font was used by the hit anime Neon Genesis Evangelion for their english title cards) and wierdly enough, Segoe UI. I love that Windows 8 aesthetic it brought.

I really like Open Sans

Comic Neue

Comic sans.

This doesn’t add anything to the post, so, sorry, but this is a really good question! Thanks for contributing!

Found this font identifier tool that works pretty well https://whatthefont.app/

https://whatthefont.app/ Found this font identifier tool that works pretty well

What open source don't should I use for high compatability and legibility?