Myriad is a humanist sans designed to be neutral, readable and versatile. It was first released as a "multiple master" font, an Adobe technology that foreshadowed variable fonts.

At a glance
Origin: Adobe, United States.
Designer: Robert Slimbach and Carol Twombly.
Date: 1992.
Evolution
It was complemented by Myriad Pro, with a wide range of weights and widths, then by Greek, Cyrillic, Arabic and Hebrew versions.
Famous examples
Apple made it its corporate typeface from 2002 to 2015, in its advertising and packaging.
Current use
It remains widely used in publishing, signage and institutional documents.
Alternatives
Frutiger, Source Sans, FF Meta.
Great typefaces glossary
Akzidenz-Grotesk, Arial, Avenir, Baskerville, Bodoni, Caslon, Circular, Cooper Black, Didot, DIN, FF Meta, Franklin Gothic, Frutiger, Futura, Garamond, Georgia, Gill Sans, Gotham, Graphik, Helvetica, IBM Plex, Inter, Minion, Montserrat, Myriad, Neue Haas Grotesk, Optima, Poppins, Roboto, Sabon, SF Pro, Source Sans, Source Serif, Times New Roman, Univers, Verdana