another really cool open source variable font is Recursive, which besides the axes for weight and italicity, has a casual- and mono-axis:
casual means making the font look more handwritten and lively. and mono can make it, well, monospaced, or just "half-monospaced", if that's what you like.
perhaps it's already well-known among font people, but i think it does a really good job at showcasing the possibilities of variable fonts, and just an overall neat-looking font.
Hobby Gamedev currently studying applied computer science
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