PNG ICO ICNS MORE
Oxygen
Text, document, insert
AliceBlue
48x48
Oxygen-Refit
Text, document, File
128x128
Human-O2
insert, Text, document
Layered System
File, Text, editor
Desktop apps
Glyph
16x16 Free Toolbar Icons
new, Page, documents
16x16
Sports & awards
Cartoon
Season's Tweetings
Text, summer, no
256x256
Network & communications
Smooth
Text, editor, insert