Examples of websites using
Futura PT
(Futura PT is a geometric sans-serif font designed by Vladimir Yefimov and Isabella Chaeva and released by ParaType in 1991. The font family consists of multiple styles with varying weights and italics)
with
Avenir
(Avenir is a sans-serif font designed by Adrian Frutiger and Nadine Chahine, released by Linotype in 1988. It features clean and modern letterforms and is available in multiple weights and styles)