White little knobs, coming in at 10x10px. Sweet!
Source Amos
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
Tiny circle waves, almost like the ocean.
Source Sagive
Prismatic Polka Dots 3 No Background
Source GDJ
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
This is a hot one. Small, sharp and unique.
Source GraphicsWall
Prismatic Geometric Pattern Background No Black
Source GDJ
A light gray wall or floor (you decide) of concrete.
Source Atle Mo
Prismatic Groovy Concentric Background
Source GDJ
Fix and cc0 to get the tile this is based on.
Source SliverKnight
Prismatic Geometric Pattern Background
Source GDJ
The image depicts a shell seamless pattern.I used an OCAL clipart called "Shell" uploaded by "jgm104".Thanks.
Source Yamachem
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
From a drawing in 'Danmarks Riges Historie af J. Steenstrup, Kr. Erslev, A. Heise, V. Mollerup, J. A. Fridericia, E. Holm, A. D. Jørgensen', 1897.
Source Firkin
The basic shapes never get old. Simple triangle pattern.
Source Atle Mo
Nice and simple crossed lines in dark gray tones.
Source Stefan Aleksić
Prismatic Geometric Pattern Background
Source GDJ
A free black metallic background pattern. Here's a new pattern I made that looks metallic.
Source V. Hartikainen
This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
Non-seamless pattern drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin