Monaspace
Five lovely monospaced variable fonts.
Times New Arial
Ever wanted to set some text in 70% Times New Roman and 30% Arial? Me neither. But now, thanks to variable fonts, you can!
Related links
Mona Sans & Hubot Sans
Two new lovely open source variable fonts from Github.
Fontshare: Quality Fonts. Free.
A whole lotta nice fonts—most of them variable fonts—from Indian Type Foundry.
Font Playground — Play with variable fonts!
A fun way to play around with the options in variable fonts.
The Next Big Thing in Type
Over the course of a semester, students at UMPRUM Academy in Prague made variable fonts. I think Krabat might be my favourite.