Glyphicons

Name

Glyphicons

Homepage

http://glyphicons.com/

Description

Glyphicons aren't precisely free, but they're worth a mention. This is a big set of terribly useful, clear icons for online use. I originally started using them because many of them are packaged with Bootstrap; after a while, I decided to buy Querki a full license, since even the "Pro" version is still quite inexpensive, and gives you hundreds of clean, powerful icons.

Some sites have their own designers, producing custom icons with their own distinctive look and feel; Querki might do that someday. But if you're like me, and don't have that level of artistic talent, this is a fine, affordable way to get many commonly-used icons quickly and easily.