Ethos is a contemporary free serif fonts. It comes in 36 font styles with true italics and a huge bunch of OpenType features like small caps, ligatures, nominators and denomiators, fractions and many more. Its x-height is pretty high, which makes it legible even on small font sizes.
Each fontface contains 500+ glyphs, supporting a huge amount of languages, mathematical operators, symbols and punctuations. Ethos Regular and Regular Italic are available as free weights. The full version is available on Myfonts and Fontspring (80% off launch-sale).
Big thanks to Fonts with Love for providing us this free fonts. Make sure to check out more awesome fonts at their portfolio.