Here’s a collection of high resolution halftone textures you are free to use as you want. Free PSD created and released by Dustin Lee.
Patterns & Backgrounds
A set of patterns and backgrounds ready to be imported in Photoshop
This is a simple pixel perfect, completely free blueprint pattern. The zip file contains a PSD and a PAT files. Source: Dmonzon.
Blueprint Patterns PSD PAT
Here are 12 more Blurred Backgrounds to use for your website or app. This includes a Photoshop PSD like always and JPEGs.
12 Blurred PSD JPG Backgrounds
10 awesome blurred backgrounds for your websites or apps JPGs. Created by Florian Carli.
10 Free Blurred Backgrounds JPG
Seamless blueprint textures for your designs. Included are 10 different patterns in Photoshop PAT format, PNG and PSD files.