There are many carbon patterns, but this one is tiny.
Source Designova
From a drawing in 'Kingsdene', Maria Fetherstonehaugh, 1878.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Everyone needs some stardust. Sprinkle it on your next project.
Source Atle Mo
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
One more sharp little tile for you. Subtle circles this time.
Source Blunia
Light gray paper pattern with small traces of fiber and some dust.
Source Atle Mo
A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
From a drawing in 'Artists and Arabs', Henry Blackburn, 1868
Source Firkin
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
A pattern derived from repeating unit cells each derived from part of a mosaic in paint.net. The starting point for the mosaic was a picture of some prawns!
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
On a large canvas you can see it tiling, but used on smaller areas, it’s beautiful.
Source Paul Phönixweiß
Prismatic Snowflakes Pattern 2 No Background
Source GDJ
Background Wall, Art Abstract, Star Well & CC0 texture.
Source Ractapopulous
The image depicts a seamless pattern made using a bird's face.
Source Yamachem