Textured Red Brown Plastic, Free Background Pattern. Although there's already enough plastic in our lives, let's bring it to the web too.)
Source V. Hartikainen
A very dark asfalt pattern based off of a photo taken with my iPhone.
Source Atle Mo
Black And White Floral Pattern Background Inverse
Source GDJ
Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Source Designova
This texture looks like old leather. It should look great as a background on web pages.
Source V. Hartikainen
Here's a subtle marble-like background for use on websites.
Source V. Hartikainen
A dark pattern made out of 3×3 circles and a 1px shadow. This works well as a carbon texture or background.
Source Atle Mo
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Prismatic Triangular Seamless Pattern III With Background
Source GDJ
Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
A pale yellow background pattern with vertical stripes. The stripes are partially faded. I think this background image turned out pretty well, especially those faded stripes.
Source V. Hartikainen
Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Prismatic Abstract Geometric Background 2
Source GDJ
The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
Alternative colour scheme for the original floral pattern.
Source Firkin
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Alternative colour scheme. Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
I scanned a paper coffee cup. You know, in case you need it.
Source Atle Mo
Embossed lines and squares with subtle highlights.
Source Alex Parker
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
A simple example on using clones. You can generate a nice base for a pattern fill quickly with it.
Source Lazur URH
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Pixel by pixel, sharp and clean. Very light pattern with clear lines.
Source M.Ashok