The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Prismatic Polka Dots 3 No Background
Source GDJ
You just can’t get enough of the fabric patterns, so here is one more for your collection.
Source Krisp Designs
Just like your old suit, all striped and smooth.
Source Alex Berkowitz
A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
This is a seamless pattern of regular hexagon which has a honeycomb structure.
Source Yamachem
A large (588x375px) sand-colored pattern for your ever-growing collection. Shrink at will.
Source Alex Tapein
Remixed from a drawing in 'Works. Popular edition', John Ruskin, 1886.
Source Firkin
This reminds me of Game Cube. A nice light 3D cube pattern.
Source Sander Ottens
Prismatic Geometric Pattern Background 2 No Black
Source GDJ
White circles connecting on a light gray background.
Source Mark Collins
A repeatable image with dark background and metal grid pattern.
Source V. Hartikainen
This is a remix of "flower seamless pattern".I rotated the original image by 90 degrees.This is a seamless pattern of flowers.These horizontal wavy lines are one of Edo patterns which is called "tatewaku or tachiwaku or 立湧" that represents uprising steam or vapor.
Source Yamachem
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I. A version of the original with random colors.
Source Firkin
This one needs to be used in small areas; you can see it repeat.
Source Luca
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
A new take on the black linen pattern. Softer this time.
Source Atle Mo
A bit strange this one, but nice at the same time.
Source Diogo Silva
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
The following free background pattern has glossy diagonal stripes as a texture to it, and it's colored in a light blue gray color. This background pattern is suitable for using in web design or any other graphic design projects. This applies to all background patterns here.
Source V. Hartikainen
Zero CC tileable bark texture, photographed and made by me. CC0
Source Sojan Janso