Seamless pattern made from a tile that can be obtained in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
The image a seamless pattern of a wire-mesh fence.I want you to use this pattern as a lower layer.
Source Yamachem
The image depicts a seamless pattern made using a bird's face.
Source Yamachem
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
First pattern tailor-made for Retina, with many more to come. All the old ones are upscaled, in case you want to re-download.
Source Atle Mo
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
A seamless pattern formed from a rectangular tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Light gray pattern with an almost wall tile-like appearance.
Source Markus Tinner
Submitted in a cream color, but you know how I like it.
Source Devin Holmes
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
More carbon fiber for your collections. This time in white or semi-dark gray.
Source Badhon Ebrahim
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
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
Seamless Prismatic Geometric Pattern With Background
Source GDJ
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett