Sans-serif fonts tend to work better for screen use, but this free slab serif typeface has been specially designed to provide a comfortable reading experience on screens. Bitter was designed by Sol Matas, and is available through Argentinian type collaborative Huerta Tipográfica. It combines generous x-heights with minimal variation in stroke weight. 

This free serif display font takes inspiration from the late 18th century European Enlightenment and the work of type designer John Baskerville. The high-contract letterforms have delicate hairlines, relating to the rise in popularity of pointed steel pens, which took over from the previous broad nib quills during this period.

The typeface design is a project led designed by Dutch designer Claus Eggers Sørensen. It's development is open source, and can be found on GitHub here. 

Lora is a free font that has its roots in calligraphy. It was originally designed for type foundry Cyreal in 2011, with a Cyrillic extension added in 2013, and comes in four styles: regular, bold, italic, and bold italic. 

Brushed curves contrast with driving serifs to give this free font a well-balanced, contemporary feel. Although Lora is technically optimised for use on the web, it also works well in print projects.

Inspired by both Dala Floda and the Bodoni family, Butler is a free font designed by Fabian De Smet. His aim was to bring a bit of modernism to serif fonts by working on the curves of classical serif fonts, and adding an extra stencil family.

The Butler family contains 334 characters, seven regular weights and seven stencil weights, and includes text figures, ligatures and fractions. It also suits many different languages with its added glyphs. De Smet suggests it would work well for “posters, very big titles, books and fancy stuff.”

Arvo is a geometric slab-serif font family that’s suitable for both screen and print use. Designed for legibility, it was created by Anton Koovit and published in the Google Font directory as a free open font (OFL). Unlike many slab serifs on Google Fonts, Arvo contains normal, italic, bold and bold italic styles.