When designing a web application, it’s important to make sure the user interface is easy to use. Using icons along side navigation links is one key ingredient to achieving this. But Instead of creating icon sets from scratch, which can be very time consuming, why not use icons that have already been created for you. Here are some of the best icon sets out there for use in web application designs.

Jonas Rask Design Icons for Developers

ASP.NET Icons

Tango Icon Library

Aesthetica Icons

Diagona Icons by pinvoke

Fugue Icons by pinvoke

FAMFAMFAM – Silk

Web Application Icons Set

Coquette Icons

Free web development icons #4 SE

Developpers Icons

Knob Buttons Toolbar icons

Simplistica Icons

Function Icon Set

Milky

Simplicio

Fresh

FAMFAMFAM – Mini

Crystal Clear

Monofactor Vector Icons

IVista Icon Pack 2

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