A background tile for web with abstract repeating texture of dark "stone wall".
Source V. Hartikainen
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Prismatic Curved Diamond Pattern 7 No Background
Source GDJ
The file was named striped lens, but hey – Translucent Fibres works too.
Source Angelica
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
This one needs to be used in small areas; you can see it repeat.
Source Luca
A repeating background with seamless texture of stone. There haven't been any stone-like backgrounds for a while, so I have decided to create one more. The rest can be found in the appropriate category.
Source V. Hartikainen
From a drawing in 'A Rolling Stone. A tale of wrongs and revenge', John Hartley, 1878.
Source Firkin
Sounds French. Some 3D square diagonals, that’s all you need to know.
Source Graphiste
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
This one is super crisp at 2X. Lined paper with some dust and scratches.
Source HQvectors
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
Did anyone say The Hoff? This pattern is in no way related to Baywatch.
Source Josh Green
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
Dark Tile-able Grunge Texture. I think this texture can be classified as grunge. It's free and seamless, as always.
Source V. Hartikainen
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
You guessed it – looks a bit like cloth.
Source Peax Webdesign
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
Prismatic Basic Pattern 2 No Background
Source GDJ
This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
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