Grotesque fonts refer to an early form of san-serif fonts developed in the 19th century to early 20th century. They were referred to as grotesque (meaning: ugly, distorted) because at the time serif fonts were almost exclusively used and the break from traditional fonts seemed less ornate and simpler. Characteristics of grotesque fonts include: imperfect, informal, varied widths, Neo-Grotesque fonts are a modern evolution of grotesque fonts starting in the 1950s to now. They often come in large families of typefaces, rather than single typefaces of old grotesque fonts. The most famous neo-grotesque font is Helvetica.
Here are some free neo-grotesque fonts you can use in your designs. Which one is your favorite? Let me know in the comments?
*Fonts marked with with an asterisk are free for commercial use. Fonts not marked are free for personal use, or if license does not specify commercial use.