Google Fonts (previously called Google Web Fonts) is an interactive directory of free hosted application programming interfaces for web fonts. It was launched in 2010 and revamped in 2011. Many of the fonts are released under the SIL Open Font License 1.1, while some are released under the Apache License; both are free software licenses. The fonts are also served by Monotype’s SkyFonts and by Adobe’s Edge Web Fonts and Typekit services.
Google Fonts is designed to provide a platform for users to discover fonts and is used extensively. Its example font faces include Lato, Raleway, and Lobster.
There are over 800 font families available through Google Fonts' main website.  All of these font files are also accessible through Google Fonts' GitHub repository at github.com/google/fonts.