Subtle scratches on a light gray background.
Source Andrey Ovcharov
A simple example on using clones. You can generate a nice base for a pattern fill quickly with it.
Source Lazur URH
Colour version of the original seamless pattern.
Source Firkin
Prismatic Basic Pattern 2 No Background
Source GDJ
Turn your site into a dragon with this great scale pattern.
Source Alex Parker
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Prismatic Abstract Background Design
Source GDJ
From a drawing in 'Less Black than we're painted', James Payn, 1884.
Source Firkin
This reminds me of Game Cube. A nice light 3D cube pattern.
Source Sander Ottens
The image depicts meshed silhouettes of various things.The original image is an OCAL clipart called "Enter FOSSASIA 2016 #IoT T-shirt Design Contest" uploaded by "openclipart".Thanks.
Source Yamachem
Submitted in a cream color, but you know how I like it.
Source Devin Holmes
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
I asked Gjermund if he could make a pattern for us – result!
Source Gjermund Gustavsen
The image depicts a seamless pattern of a fishnet with a plenty of fish.It may be a lucky charm for fishermen.
Source Yamachem
The image depicts a seamless pattern of a snow crystal.I referred to a book called ”sekka-zusetsu” or "雪華図説" which means an illustrated explanation about snow crystals.This book was published in 1832 (天保3年) or Edo period.For more about "雪華図説",see here:dl.ndl.go.jp/info:ndljp/pid/2536975
Source Yamachem
Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
Pattern formed from simple shapes. Black version.
Source Firkin
Psychedelic Geometric Background No Black
Source GDJ
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
Here's a tile-able wood background image for use in web design.
Source V. Hartikainen
Remixed from a raster on Pixabay that was uploaded by ArtsyBee.
Source Firkin
Submitted by DomainsInfo – wtf, right? But hey, a free pattern.
Source DomainsInfo
Same as the black version, but now in shades of gray. Very subtle and fine grained.
Source Atle Mo