The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A seamless pattern formed from cross 4. To get the original tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
It’s big, it’s gradient—and it’s square.
Source Brankic1979
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Looks as if it's spray painted on the wall. You can be sure that this pattern will seamlessly fill your backgrounds on web pages.
Source V. Hartikainen
As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
Kaleidoscope Prismatic Abstract No Background
Source GDJ
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A nice and simple gray stucco material. Great on its own, or as a base for a new pattern.
Source Bartosz Kaszubowski
The classic subtle pattern. Sort of wall/brick looking. Or moon-looking?
Source Joel Klein
Love me some light mesh on a Monday. Sharp.
Source Wilmotte Bastien
From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
Washi (和紙?) is a type of paper made in Japan. Here’s the pattern for you!
Source Carolynne
Number 5 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Zero CC tileable bark texture, photographed and made by me. CC0
Source Sojan Janso
A seamless textured paper for backgrounds. Colored in pale orange hues.
Source V. Hartikainen