Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
Number 3 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
The image depicts a Japanese Edo pattern called "kanoko or 鹿の子" meaning "fawn" which has a fur with small white spots.
Source Yamachem
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
White fabric looking texture with some nice random wave features.
Source Hendrik Lammers
Looks a bit like concrete with subtle specks spread around the pattern.
Source Mladjan Antic
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
Derived from an image that was uploaded to Pixabay by darkmoon1968
Source Firkin
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
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
A repeating background of beige paper with vintage look. Repeats to infinity, as usual.
Source V. Hartikainen
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
Remixed from a drawing in 'Some account of the Worshipful Company of Ironmongers', John Nicholl, 1866.
Source Firkin
Seamless tile drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Derived from an image that was uploaded to Pixabay by darkmoon1968
Source Firkin
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
A seamless web background with texture of aged grid paper.
Source V. Hartikainen