* Univers: One of the most influential sans-serif typefaces of the 20th century, designed in 1954 and widely used in signage, branding, and publishing.
* Frutiger: A humanist sans-serif typeface designed in 1975, known for its clarity, readability, and versatility. It's commonly used in signage, corporate identity, and publications.
* OCR-B: A typeface designed in 1968 for optical character recognition systems, used for bank checks, postage stamps, and other applications requiring machine readability.
* Avenir: A geometric sans-serif typeface designed in 1988, characterized by its strong geometric forms and sharp angles.
* Super Grotesk: A sans-serif typeface designed in 1983, inspired by early 20th-century German grotesques.
While he didn't write books, Frutiger was known for his contributions to typography through his designs and his writings on the subject.