Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
Based on an image that was uploaded to Pixabay by devanath
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Did some testing with Repper Pro tonight, and this gray mid-tone pattern came out.
Source Atle Mo
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
This is so subtle you need to bring your magnifier!
Source Carlos Valdez
Tile available in Inkscape using shift-alt-i on the selected rectangle
Source Firkin
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Alternative colour scheme.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
I love cream! 50x50px and lovely in all the good ways.
Source Thomas Myrman
Prismatic Curved Diamond Pattern 4 No Background
Source GDJ
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
Looks as if it's spray painted on the wall. You can be sure that this pattern will seamlessly fill your backgrounds on web pages.
Source V. Hartikainen
Crossing lines with a subtle emboss effect on a dark background.
Source Stefan Aleksić
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
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Prismatic Curved Diamond Pattern 2 No Background
Source GDJ
Prismatic Snowflakes Pattern No Background
Source GDJ
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom