Love the style on this one, very fresh. Diagonal diamond pattern. Get it?
Source INS
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
Number 1 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
A seamlessly tile-able grunge background image.
Source V. Hartikainen
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen
Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
Green Background Pattern
Source V. Hartikainen
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
You may use it as is, or modify it as you like.
Source V. Hartikainen
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
Remixed from a drawing in 'Works. Popular edition', John Ruskin, 1886.
Source Firkin
Coming in at 666x666px, this is an evil big pattern, but nice and soft at the same time.
Source Atle Mo
From a drawing in 'Cassell's Library of English Literature', Henry Morley, 1883.
Source Firkin
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
Smooth Polaroid pattern with a light blue tint.
Source Daniel Beaton