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
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
Prismatic Chevrons Pattern 5 With Background
Source GDJ
From a drawing in 'Az Osztrák-Magyar Monarchia irásban és képben', 1885.
Source Firkin
This is indeed a bit strange, but here’s to the crazy ones!
Source Christopher Buecheler
Used in small doses, this could be a nice subtle pattern. Used on a large surface, it’s dirty!
Source Paul Reulat
Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
Number 5 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Light gray version of the Binding pattern that looks a bit like fabric.
Source Newbury
A very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
On a large canvas you can see it tiling, but used on smaller areas, it’s beautiful.
Source Paul Phönixweiß
Prismatic Groovy Concentric Background 4
Source GDJ
A beautiful dark padded pattern, like an old classic sofa.
Source Chris Baldie
Prismatic Polka Dots Mark II No Background
Source GDJ
Vector version of a JPG that was uploaded to Pixabay by theasad121
Source Firkin
It’s an egg, in the form of a pattern. This really is 2012.
Source Paul Phönixweiß