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Wikipedia Icons - Link Collection
The page says: The purpose of this page (and its subpages) is as a repository for links to free icon collections, for use on Wikipedia. Generally these are open (as in... -
User Interface Icons
About A range of free icons under CC-BY-SA license. -
twotiny icons
About Sets of very tiny icons under GPL/Artistic license: http://twotiny.googlecode.com/files/twotiny-plus-expansion.zip http://twotiny.googlecode.com/files/twotone.zip -
Symbol Signs: Society & Environment
Description "This system of 50 symbol signs was designed for use at the crossroads of modern life: in airports and other transportation hubs and at large international events.... -
Pinvoke
About Set of icons. Openness Open. Under CC-BY. -
OpenCliparts
The Open Clipart Library project aims to create an archive of clip art that can be used for free for any use. All graphics submitted to the project should be waived of all... -
The Noun Project
The Noun Project collects, organizes and adds to the highly recognizable symbols that form the world's visual language, so we may share them in a fun and meaningful way. More... -
famfamfam.com: Icons
About Various sets of 16x16 icons, including: http://www.famfamfam.com/lab/icons/silk/famfamfam_silk_icons_v013.zip...