Floors-Tiles. CC0 License.
A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
Prismatic Snowflakes Pattern 3 No Background
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Same as Silver Scales, but in black. Turn your site into a dragon with this great scale pattern.
Source Alex Parker
ZeroCC tileable beechwood wood texture, generated in Neo Texture Edit by me. CC0
Source Sojan Janso
Sharp pixel pattern, just like the good old days.
He influenced us all. “Don’t be sad because it’s over. Smile because it happened.”
Source Atle Mo
Seamless Core Pattern 3
You guessed it – looks a bit like cloth.
Source Peax Webdesign
Incoming catena. Stone & well. CC0 texture.
Prismatic Geometric Tessellation Pattern No Background
Not subtle at all, but man – the craftsmanship is ace!
Prismatic Curved Diamond Pattern 6 No Background
Vector version of a png that was uploaded to Pixabay by pencilparker
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Inspired by a pattern seen on a public domain image of a very old tile. To get the unit cell, select the rectangle in Inkscape and use shift+alt+i.
Add some sprinkles to your site.
Source Rebecca Litt
Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
Free cc0, hope you will like!
Based on several public domain drawings on Wikimedia Commons. This was formed from a rectangular tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
A version without colours blended together to give a different look.
*** Released Now !! ***Download
The image depicts a seamless pattern made using a bird's face.
Drawn in Paint.net and vectorised in Vector Magic
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
Tiny, tiny 3D cubes. Reminds me of the good old pattern from k10k.
Source Etienne Rallion
From a drawing in 'Line and form', Walter Crane, 1914.
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
An alternative colour scheme to the original seamless pattern.
*** Released Now !! ***1 Download
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.