Linux

I normally design and create my own fonts before I start a new document or open console.
I use Arch Linux, btw.

I'm a KDE Plasma user and it's using Noto Fonts by default IIRC. So that's what I use.

Whatever is the default, as long as that is not some comic sans or whatever that Samsung font abomination was.

Ubuntu font. Ubuntu font best font.

I am a fan of noto fonts.

My favorites:

Mono:

https://github.com/be5invis/Iosevka

Period. Full stop. A line of nothing but exclamation points. The Iosevka family blows every other mono-width font out of the water with at LEAST one, if not more, of its extremely customizable variations.

F/W:

https://fonts.google.com/specimen/Comfortaa

https://fonts.google.com/specimen/Rowdies

https://fonts.google.com/specimen/Raleway

Inter Display - all UI stuff, it is designed for max legibility on screens. In Debian repos as fonts-inter

PragmataPro - all monospace/code. Paid for it 15 years ago and worth it, best mono font

Utopia Std - all serif document text. Purchased all the way back in 1998 and used for every doc i've ever written.

Props also to the complete IBM Plex family which is solid for sans, serif, and mono versions.

FiraCode Nerd for mono and Noto Sans for everything else.

I normally use the Deja Vu fonts. I do have the windows fonts installed, but that's only for some wine programs that need them.

Noto, Andale, San Francisco Source, Fira etc. There are so many nice fonts out there, no need to stick to Windows fonts.

I actually like to use Comic Neue for personal stuff. https://comicneue.com/

Ubuntu is another nice font, which I like to use for more serious documents. https://design.ubuntu.com/font

For system fonts I use whatever comes preinstalled. I don't modify the font defaults in any way.

I use Open Sans for System and in LibreOffice https://www.opensans.com/ .
And these are good resources as well, https://fontlibrary.org/

I like the Ubuntu font for the system, but in the terminal and my IDE I use JetBrains Mono.

Nerdfonts ofc.

Installing Microsoft TTF packages on my distro used to be one of the first things I did. Sometime back I ended up finding suitable replacements that are stock (less packages, less installation steps, less proprietary software.)

I've recently found the Inter-font package (mentioned in one of Infinitely Galactic's YouTube videos. It's excellent, clean like Noto Sans, but slightly more readable. I'll swap in the Ubuntu font every now and then for fun though, I really like that one too.

Whatever is default on the distro I run.
If I see squares with numbers in them somewhere, I install the biggest font metapackage I can find in the repo, which usually fixes it.

I download noto-fonts{,-{cjk,emoji,extra}} and ttf-nerd-fonts-symbols{,-mono}

I used to use Inter Semibold as my main UI font but recently moved over to SF Pro Text Semibold. I've been consistently using the Nerd Fonts version of Fira Code for terminal/IDE

Google's Rubik and IBM Plex Sans are my favorites.

. I like it so much that I've set a rule to replace commonly used fonts (Arial, Times New Roman, Verdana).

I never changed the default font on GNOME. But for the website I'm building I use DINRoundPro

I use Recoleta (in the alternative version) for my personal stuff. I just like the look of it and it's IMO good for both body text and headlines. I also like the slight 70s vintage style.

Sans: Cantarell
Serif: Linux Libertine
Monospace: JetBrains Mono and Fira Code

A custom Iosevka build for terminal and code and B612 font for everything else on the desktop. I moved recently from Monoid and Atkinson Hyperledgible.

Fira Code Nerd Font for the terminal and stock fonts for everything else

I've set my ereaders to roboto thin or roboto light. I haven't been motivated enough to try to change fonts on other platforms.

I use KDE which has noto sans as its default. I use fira code for my terminal and ide though.

For monospace, Bitstream Vera Sans Mono. Was set in my terminal already, but I've just switched Firefox to it as of this comment because I forgot to after a recent upgrade. The default was Liberation Mono, which I don't have much of a problem with (hence me taking so long to do anything about it), but the serifs on BVSM are a bit less severe.

Liberation Serif as the default browser font is fine. Most sites define their own proportional fonts these days anyway, but less so for preformatted text.

For the OS in general, usually the defaults are inoffensive. There was a push a while back to use the Ubuntu font that I really don't like, and there I think I actually substituted it for the non-mono Bitstream Vera Sans, or some other similar font.

Vera is a Verdana-like font, which you'll know if you prefer the Microsoft options.

What font do you use?

DejaVu Sans for basically everything. DejaVuSans Mono for things I need a monospace font for. Nerdfonts Symbols for various icons/symbols to show icons in Neovim or Waybar for example.

I use Inter for the UI and SF Mono (from Macos) for terminal and coding.

I’ve been using Inconsolata for my terminal emulators for years… and now it looks like I have some other ones to try out!

I use fonts.google.com for discoverablility, but download the fonts from the GitHub repositories.

UI: Inter (if I bother changing the default)

Reading: Source Serif 4, Literata, and Noto Serif

Terminal: Fira Code

Text editor: Fira Code

Document output: EB Garamond, Source Serif 4, and STIX Two Text

Symbols: Noto Sans Symbols, Noto Sans Symbols 2, Symbols Nerd Font

Microsoft fonts largely don't have the character coverage I need or are not better than what is available under open licenses.

Embedding fonts in documents negages the need for others to have matching fonts installed on their computer.

Depends. I do most documents in Arial and Times New Roman, as they are two of the best in legibility.

I also use DroidFonts, and some TeX-Fonts.

I just found Monaspace and I think I'll give it a try (it is a monospace font family that does not look that much "monospacy")

I'm on Linux Mint, and I installed the default fonts used on Pop OS, which are Fira and Roboto Slab

I use Noto Sans, or the Liberation Sans / Liberation Serif fonts. Tend to have a mix but Noto Sans for most desktop/GUI fonts.

I also quite like Libre Caslon and EB Garamond as serif fonts for reading, so tend to use those with e-reader software or on my ereader device.

I do install the old Microsoft Fonts just in case/out of habit but they seem to be disappearing from the internet fast now.

Inter and Fantasque Sans Mono .

Default plasma stuff and fora code NF for terminals and code editors (I use neovim mostly, so that's the same in many cases)

Comic Shanns mono all the way