The Noun Project’s mission is to share, celebrate, and enhance the world’s visual language. The goal is to collect and organize all the symbols that form the language into one easy-to-use online library that can be accessed by anyone. All the symbols on their site are completely free to download, and can be used for design projects, architecture presentations, art pieces just about anything.
The idea is simple: make a freely accessible library of clear, simple graphics that represent everything from emergency rooms and medications to different kinds of cocktails or entrees.
[advt]They borrow liberally from established icon sets and public domain symbols, of course: there’s no need to create a new, more graphic “biohazard” symbol, or try to improve on the “walking guy with arrow” it see in every airport.