google-fonts/apache/arimo/DESCRIPTION.en_us.html

<p>Arimo was designed by Steve Matteson as an innovative, refreshing sans
serif design that is metrically compatible with Arial™. Arimo offers improved
on-screen readability characteristics and the pan-European WGL character set
and solves the needs of developers looking for width-compatible fonts to
address document portability across platforms.</p>

<p>Updated in May 2013 with improved hinting and released under the 
Apache 2.0 license.</p>