Source Sans 3
Google Fonts · Paul D. Hunt · 2012
Adobe's open-source humanist sans, built for screen legibility and long-form reading across a wide range of weights and scripts.
About
Source Sans 3 was Adobe's first open-source typeface family, and it remains one of the most dependable choices for interface design and editorial work on screen. Its humanist proportions keep it warm enough for body text while its neutral clarity suits UI environments without friction. Cyrillic, Greek, and extended Latin coverage make it a strong candidate for multilingual projects.
Classification
The open-source companion to Adobe's Source family, Source Sans 3 is a clean, highly legible humanist sans-serif designed with user interface and body text legibility as primary goals. Its neutral yet warm character, broad weight range, and extensive script coverage make it a reliable workhorse.