Icon sets

FamFamFam

247 icons in size 16×11. GIF and PNG formats. Flags are available for free use for any purpose with no requirement for attribution.

• Download from famfamfam.com

Phoca Flag Icons

Available sizes: 16×12, 22×14. PNG format. Released under Public Domain.

• Download from phoca.cz

IconDrawer Flag Icons

Available sizes: 16×16, 24×24, 32×32, 48×48, 64×64, 128×128. PNG format. Flags are free for personal use. For commercial or personal use on website, please place a link to www.icondrawer.com on the same pages the icons are used.

• Download from icondrawer.com

• thenounproject.com

• Tango Desktop Project
• Original Tango icons on Wikimedia Commons
• GNOME Desktop icons on Wikimedia Commons

KDE4 Icon Theme.

• Oxygen Project
• Oxygen Icons Pack 1.3
• Oxygen-Refit These pack includes 868 PNG icons 128x128pixels wide.
• KDE svn trunk