Noto is a portmaneau for "No Tofu" - which is a project of Google to introduce a font that will universally support most missing characters with aim for clarity, elegance, and simplicity. It is also a standard font for Material Design.
Ranked in these QuestionsQuestion Ranking
Pro Simple and yet beautiful
Simple and beautiful - much like the Windows counterparts such as Calibri and Arial but it's native for Linux and for this reason it looks better than these two with anti-aliasing.
Licensed and distributed under the SIL Open Font License.
Pro Expansive character set
Noto Sans is one of the most comprehensive fonts in the market, covering an estimated 30+ languages backed by Google.
Pro Optimized for a large variety of displays
Glyph design on Noto Sans is well designed and accounts for HiDPI and standard displays.
Looks very clean and crisp on retina displays.
Con Font pack might be too large
Because it is so comprehensive, the TTF/OTF packages in ZIP is really large.