A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
A free seamless background image with abstract texture of green "curtain".
Source V. Hartikainen
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
The basic shapes never get old. Simple triangle pattern.
Source Atle Mo
Bright gray tones with a hint of some metal surface.
Source Hendrik Lammers
Prismatic Groovy Concentric Background 5 No Black
Source GDJ
Derived from a drawing in 'Historiske Afhandlinger', Adolf Jorgensen, 1898.
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 seamless pattern based on a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
A seamless pattern with wide vertical stripes colored in pale yellow.
Source V. Hartikainen
Used the 6th circle pattern designed by Viscious-Speed to create a print that can be used for card making or scrapbooking. Save as a PDF file for the best printing option.
Source Lovinglf
Pattern formed from simple shapes. Black version.
Source Firkin
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
A web texture of brown canvas. Will look great, when used in dark web designs.
Source V. Hartikainen
This background pattern contains a seamless texture of bark. It's not very realistic, but I think it looks quite nice.
Source V. Hartikainen
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
Number 5 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Brushed aluminum, in a bright gray version. Lovely 2X as well.
Source Andre Schouten
Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
Could be paper, could be a Polaroid frame – up to you!
Source Chaos
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Remixed from a drawing in 'Analecta Eboracensia', Thomas Widdrington, 1897.
Source Firkin
A browner version of the original weathered fence texture.
Source Firkin
Dark blue concrete wall with some small dust spots.
Source Atle Mo