Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
From an image on opengameart.org shared by rubberduck.
Source Firkin
Remixed from a drawing in 'Works. Popular edition', John Ruskin, 1886.
Source Firkin
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
ZeroCC tileable wood boards texture, photographed and made by me. CC0
Source Sojan Janso
Prismatic Chevrons Pattern 5 With Background
Source GDJ
As the original image 's page size is too large for its image size, I remixed it.
Source Yamachem
The image is a design of blue glass.How about using it as background image?
Source Yamachem
Super dark, crisp and detailed. And a Kill Bill reference.
Source Badhon Ebrahim
Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
Floral patterns might not be the hottest thing right now, but you never know when you need it!
Source Lauren
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
By popular request, an outline version of the pentagon pattern.
Source Atle Mo
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
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A repeating background of beige (or is it more vanilla yellow) textured stripes. One more background with stripes.
Source V. Hartikainen
In the spirit of WWDC 2011, here is a dark iOS inspired linen pattern.
Source Atle Mo
Prismatic Curved Diamond Pattern 3 No Background
Source GDJ
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian
The classic notebook paper with horizontal stripes.
Source Are Sundnes
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran