I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Greyscale version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Feel free to use this seamless background texture as a background on a web site. It's colored in a light pink color and is seamlessly tile-able.
Source V. Hartikainen
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
Light gray paper pattern with small traces of fiber and some dust.
Source Atle Mo
Background formed from the iconic plastic construction bricks that gave me endless hours of fun when I was a lad.
Source Firkin
Light and tiny, just the way you like it.
Source Rohit Arun Rao
Sounds like something from World of Warcraft. Has to be good.
Source Tony Kinard
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
A repeating background with a look of paper. I have added some changes to PatCreator. Now you can share your designs by submitting them to a new gallery section. Start by clicking Edit with PatCreator above.
Source V. Hartikainen
This light blue background pattern is quite pleasing to the eye, it consists of a tiny rough grid pattern, which is seamless by design. That's it, if you like the color, you can use this seamless pattern in a web design without making any further modifications to it.
Source V. Hartikainen
First pattern tailor-made for Retina, with many more to come. All the old ones are upscaled, in case you want to re-download.
Source Atle Mo
Looks like an old wall. I guess that’s it then?
Source Viahorizon
And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio
Derived from an image that was uploaded to Pixabay by Kaz
Source Firkin
Light gray pattern with an almost wall tile-like appearance.
Source Markus Tinner
Retro Circles Background 7 No Black
Source GDJ
Zero CC tileable ground (#2) cracked, crackled texture, made by me. CC0
Source Sojan Janso
A set of paper filters. The base texture is generated the same way, only the compositing mode is varied.
Source Lazur URH
This makes me wanna shoot some pool! Sweet green pool table pattern.
Source Caveman
The tile can be had by using shift+alt+i on the selected rectangle in Inkscape
Source Firkin
The image depicts a seamless pattern of a Japanese family crest called "chidori" in Japanese .A chidori in Japanese means a plover in English.
Source Yamachem
Dark blue concrete wall with some small dust spots.
Source Atle Mo
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective