PSDfreebee is a website presenting free PSD files which you may find helpful while designing websites & applications.

You can find PSD logos, website layouts, icons & more. It is a fresh website where there are already 25+ quality files and new ones are added frequently.
Ganato Design gives away 24 PSD icon sets for free.
The sets include icons for applications, charts, databases, documents, emails, users, weather & more.

Sizes of icon sets differ between 16*16, 32*32 & 48*48 pixels.
Web application buttons have very standard designs in general. The basic button element with styles, icons or rectangle images.
The button set below is also a classic one, known and accepted by web users which is nice, and has a good look. Also, icons are something that users love.
Set contains a PSD file with well grouped layers. You can easily create new buttons by duplicating or editing the current ones.

Icons used are the famous famfamfam silk icons. You can download the icon set from their site and generate more buttons with the set.
P.S. If you share the buttons on your website, please don’t give a direct link to the file and give the link to the post. Thanks.
Template World, a website providing high quality templates including premium Wordpress themes, Joomla templates and even logo templates, has high quality free XHTML / CSS templates which you may use or inspire.
Look at how beautiful these free XHTML templates are:



Although everybody does not prefer using templates, with the high quality ones, it is very helpful to see the code and design files to learn new techniques and be inspired.
After downloading these free XHTML / CSS templates, you can send an e-mail to Template World to get the PSD files for free too.
P.S. This post is an advertorial.
Sweetie is a 2 set of free icons that you can use in your web applications.
First icon set is the BasePack (182 icons):

Second icon set is communication icons (37 icons):

Sweetie icon sets are licensed under a Creative Commons licence and commercial use is fine. Also feel free to make derivatives with the included Photoshop documents.