1. Museo Slab 500
Created by exljbris, the Netherlands-based font foundry of Jos Buivenga, Museo Slab 500 is a boxy and affectionate slab serif font.
2. AW Conqueror Slab
This slab serif font is part of the Conqueror free family of fonts designed by award-winning type designer, Jean François Porchez. The font family was inspired by the 60-70’s spirit.
This slab serif font is by Manfred Klein. Nilland is free, but you’re encouraged by the author to make a charitable donation to Doctors Without Borders especially when you employ his fonts in commercial projects.
4. Klein Slabserif
Another slab serif font by Manfred Klein, Klein Slabserif distinguishes itself with its intriguing (and almost awkwardly truncated) block-shaped serifs.
5. Bullpen Heavy
Part of the Larabie Collection — a set of fonts by Ray Larabie, a Canadian font designer living in Japan — Bullpen Heavy is a strong and "masculine" font.
This super-bold slab serif font takes its cue from old American Western typography. Chunk was designed by Meredith Mandel and released through the League of Movable Type.
Inspired by typefaces frequently used by U.S. state universities, College (by Matthew Welch) is a slab serif font that can give your work a collegiate theme reminiscent of Animal House.
8. Nadia Serif
Designed by Switzerland-based graphic designer, Nadia Knechtle, Nadia Serif is a clean, thin but strong slab serif font.
9. Indento Bold
Indento is a futuristic slab serif font by Mugur Mihai. The characters’ brackets are indented inward, resulting in a distinctive aesthetic.
10. Tertre Extra Bold
Tertre, a font family inspired "from the French signage tradition," is a good display face that works well when utilized in terse text blocks.