A seamless pattern of leopard skin. It should look nice as a background element on web pages.
Source V. Hartikainen
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
Alternative colour scheme to the original.
Source Firkin
More leather, and this time it’s bigger! You know, in case you need that.
Source Elemis
If you need a green background for your blog/website, try this one. Remember that Green Striped Background is seamlessly tileable.
Source V. Hartikainen
Prismatic Hexagonalism Pattern No Background
Source GDJ
A free seamless background texture of "timber wall" (colored in dark brown).
Source V. Hartikainen
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
Prismatic Geometric Pattern Background No Black
Source GDJ
As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
From a drawing in 'Artists and Arabs', Henry Blackburn, 1868.
Source Firkin
This seamless light brown background texture resembles a wallpaper with vertical stripes. One way to use it is as a tiled background on web sites.
Source V. Hartikainen
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
Prismatic Abstract Geometric Background 2
Source GDJ
A seamless pattern made from the gold Penrose triangle by GDJ and the two remixes
Source Firkin
Formed by distorting an image on Pixabay that was uploaded by gustavorezende. To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin