Croscore fonts

Arimo

Foundry	Ascender Corporation
Website	fonts.google.com/specimen/Arimo
	Arial Liberation Sans

Tinos

Foundry	Ascender Corporation
Website	fonts.google.com/specimen/Tinos
	Times New Roman Liberation Serif

Cousine

Foundry	Ascender Corporation
Website	fonts.google.com/specimen/Cousine
	Courier New Liberation Mono

Caladea

Website	fonts.google.com/specimen/Caladea
	Cambria

Carlito

Website	fonts.google.com/specimen/Carlito
	Calibri

The Chrome OS core fonts, also known as the Croscore fonts, are a collection of three TrueType font families: Arimo (sans-serif), Tinos (serif) and Cousine (monospace). These fonts are metrically compatible with Monotype Corporation’s Arial, Times New Roman, and Courier New, the most commonly used fonts on Microsoft Windows operating system, for which they are intended as open-source substitutes.

Google licenses these fonts from Ascender Corporation under the Apache License 2.0.

The fonts were originally developed by Steve Matteson as Ascender Sans and Ascender Serif, and were also the basis for the Liberation fonts licensed by Red Hat under another open source license. In July 2012, version 2.0 of the Liberation fonts, based on the Croscore fonts, was released under the SIL Open Font License.

In 2013, Google released an additional Crosextra (Chrome OS Extra) package, featuring Carlito (which matches Microsoft's Calibri) and Caladea (matching Cambria).

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Wikipedia