Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf
A pale olive green background with a seamless texture.
Source V. Hartikainen
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
The name tells you it has curves. Oh yes, it does!
Source Peter Chon
Prismatic Curved Diamond Pattern No Background
Source GDJ
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
Three shades of gray makes this pattern look like a small carbon fiber surface. Great readability even for small fonts.
Source Atle Mo
Geometric lines are always hot, and this pattern is no exception.
Source Listvetra
This is the remix of "Tileable Wave Pattern 2" uploaded by "Arvin61r58".Thanks.I added a wire-mesh fence seamless pattern as a lower layer.
Source Yamachem
A repeating background for websites with a texture of black groove stripes.
Source V. Hartikainen
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
This is indeed a bit strange, but here’s to the crazy ones!
Source Christopher Buecheler
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
Tiny little flowers growing on your screen. Nice, huh?
Source Themes Tube
A seamless pattern formed from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Adapted from an image that was uploaded to Pixabay by Anerma.
Source Firkin
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
A free light orange brown wallpaper with vertical stripes designed for use as a tiled background on websites. An yet another background pattern with vertical stripes.
Source V. Hartikainen
The classic subtle pattern. Sort of wall/brick looking. Or moon-looking?
Source Joel Klein