Real snow that tiles, not easy. This is not perfect, but an attempt.
Source Atle Mo
Prismatic Snowflakes Pattern 2 No Background
Source GDJ
I’m guessing this is related to the Sony Vaio? It’s a nice pattern no matter where it’s from.
Source Zigzain
A pattern derived from repeating unit cells each derived from part of a mosaic in paint.net. The starting point for the mosaic was a picture of some prawns!
Source Firkin
A comeback for you: the popular Escheresque, now in black.
Source Patten
Bit of a strange name on this one, but still nice. Tiny gray square things.
Source Carlos Valdez
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Prismatic Rounded Squares Grid 3 No Background
Source GDJ
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra
Just like the black maze, only in light gray. Duh.
Source Peax
Sharp pixel pattern, just like the good old days.
Source Paridhi
Submitted by DomainsInfo – wtf, right? But hey, a free pattern.
Source DomainsInfo
Number 5 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
This background has abstract texture with some similarities to wood.
Source V. Hartikainen
This is the remix of "Colorful Floral Pattern Background 3" uploaded by "GDJ". Thanks.
Source Yamachem
Floral patterns might not be the hottest thing right now, but you never know when you need it!
Source Lauren
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
A heavy dark gray base, some subtle noise and a 45-degree grid makes this look like a pattern with a tactile feel to it.
Source Atle Mo
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin