In this post we are going to take a look on some of the beautiful and useful online Photoshop patterns and pattern generators that can be used to make the designs look more good.
BgPatterns
This is basically a patterns library where you can find, create, rate and share patterns.
Din Patterns
Its a huge gallery of ready-made Photoshop patterns. These patterns are available free to use for both commercial and non-commercial use.
Dotted Background Generator
This is a very easy and nice site where you can create dotted backgrounds. You can choose color of the background, then color of the dot and can also set the size of the dots to appear.
Patterns4U by Koller Media
They have collected hundreds of patterns submitted by users and then categorized in 7 categories which includes Lines, Dotted, Squares, Classic, Dirty, Funky and Real.
Pixel Decor
They have some real nice spiffy and fully-tiled patterns for desktop use. Yes, they are mainly for desktop use but if you are creative you know how to make a use of them in your designs 
True Type Pixels Patterns
Fontastica shares some of these pixel patterns, from 8×8 pixels to 16×16 pixels. The use is the same as for pixel fonts. It can also fit flash projects.
Squid Fingers
Squid Fingers has a collection of some really beautiful patterns. You must check them out.
Stripe Designer
The site is inspired from the idea of having a tool to help making tiles and stripes in Photoshop easier and faster.
Stripe Generator
Unleash your personal style, experiment and download the tile. You can use it directly in your css file or as pattern in Photoshop.
Stripe Mania
Stripemania is a simple and free web 2.0 tool to create seamless diagonal stripes for your designs. You are able to choose the size of the stripes and the spacing between those.
Striped Backgrounds
Its is simple but very nice tool to create background stripes. Just pick the colors and it will generate stripes for you.
Tartan Maker
The new trendsetting application for cool designers.
Wallpaper Patterns
They have some nice wallpaper patterns.
Great Patterns Man. Really the pattern generator is useful for lots of people.