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Icons are an important aspect of a web application or even just a website — they add visual cues to different headings, buttons and sections of the site, making it easy to recognize what each element is and help users make quicker decisions. They also look great and add a professional polish to your app.
These days there are many great icon packs available for free. Here’s my selection of the top 10 free icon packs.
Silk Icons
This is a fantastic icon set that is very popular throughout many web apps and websites. There are over 700 icons in this pack, which cover pretty much anything you would need, from error signs, hard drives, alarms, calendars, disks, app icons, text editing symbols, RSS feeds, etc etc. — this pack really covers it all. Highly recommended. Download here.

yellowicon Crystal Set
A very nice icon set that’s released for Linux usage, but is very well suited for web apps and websites as well. 1500 Icons in this pack in total (in various sizes). Download here.

WebAppers Web Application Icon Set
This is a nice set for web applications or websites, featuring 20 glossy 3D icons. Download here.

Diagona Icons
This is a fantastic set of small icons, ideal for use as little header icons or for buttons/tabs in web applications. 400 icons in total (200 in 10×10 pixels size and a further 200 in 16×16). This pack is similar to the Fugue and Silk sets, and is of very high quality. Download here.

Simplistica Icons
25 clean and sharp icons. Nice folders, envelopes and calendar pages especially. Download here.

Monofactor Vector Icon Set 1
25 icons in scalable Illustrator format, meaning you can make them any size you need to and they won’t lose quality. Not a very extensive pack but the quality is good. Download here.

iTweek’s Knob Buttons Toolbar icons
A small icon set by iTweek on Deviantart. They look like little knobs and feature several colors depending on the action they symbolize. Download here.

iVista Icon Pack 2
Vista style icons that are sharp and come in a large 256×256 pixel size. 92 icons in total, covering things like networks, devices and documents. While aimed at the operating system, the pack has plenty of icons that are suited well as illustrations on websites. Download here.

Feedicons 2
Need some good RSS icons? Here you go. Plenty of variations here, from your standard RSS square, to RSS speech bubbles, RSS documents and folders. Download here.
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Fugue Icons
The Fugue pack is from the same designer (Yusuke Kamiyamane) as the Diagona pack. These icons are really fantastic, I can’t recommend them enough. 788 in total (16×16 pixel size), which covers pretty much every action and button your web app or website will need. Get them now. Download here.

I hope you find these resources useful. Do you have or know of a great free icon pack? Share it with us in the comments below.
Great collection thanks from spain!
No problem Javier, I’m glad you find this list useful — there’s a lot of gems in there, I use the Silk pack on this very site actually.
I see you’re site is brand spankin new. It’s quite eye pleasing. Keep it up!
You can use the Icon sets for KDE and Gnome - http://www.bin-co.com/blog/2007/12/a-secret-source-for-great-free-icons-for-your-desktop-and-web-apps/ - as well - they have some great icons. Also, they are under a free license - so you don’t have to worry about royalty.
hello
Alex is right, your site is very clean cut and nice to the eyes! Will bookmark ya and keep up!
Best of luck!
oh..and I like your “Tweet” bird lol should be cool when you get it up and working
Thanks for the positive feedback Alex and BeyondRnandom. The site has indeed just launched — I’m still making tweaks and updating the code behind the scenes ;) Writing the next article already though and will try to keep a regular posting schedule here.
Thanks for the link Binny V A — those icons look good.
P.S. Twitter bird should be working… looks like Twitter is having some issues on their side again.
Oh yea its working now! Looks nice bro
Hey Dmitry- you’re going to have a ton of problems with twitter (they can’t handle the load most of the time). Do you use their default badge? I had a big problem with it hanging my site. If you click my name you can see how i got around it with a little javascript (its in the code).
Hi Alex,
I am indeed using their default method. I placed their javascript right before the body close tag so even if Twitter goes down the page at least loads everything else on it — though it does hang on the “loading page” indicator when their server doesn’t respond, so it’s not ideal.
You say the javascript you use won’t hang the page? If so I shall have to try it out — thanks a lot for the link.
thanks for this article. these icon sets are really awesome.
Firstly, congrats on making on delicious.com
Your icons are great. Thank you for sharing this great icons.
Can’t believe you didn’t mention Fam Fam Fam! None the less, a very nice list.
Bramme: I did mention Fam Fam Fam :) That’s the very first pack in the list (Silk)
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