Background pattern 15 #201
Dark CC 0A seamless pattern the starting point for which was a 'colour modulo' texture in Paint.net.
Source Firkin
More Textures
Textured Grid Paper #1316
Orange CC BY-SA 3.0A tile-able background for websites with paper-like texture and a grid pattern layered on top of it.
Source V. Hartikainen
Background pattern 314 (colour 3) #1837
Green CC 0The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Wine glass background #2054
Pink CC 0Remixed from an image on Pixabay uploaded by Prawny
Source Firkin
Noisy #45
Paper CC BY-SA 3.0Looks a bit like concrete with subtle specks spread around the pattern.
Source Mladjan Antic
Background pattern 308 (colour 5) #1869
Blue CC 0Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Background pattern 238 (colour 2) #2228
Green CC 0To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Real Carbon Fiber #286
Carbon CC BY-SA 3.0Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
Carbon Fiber v2@2X #106
Carbon CC BY-SA 3.0One more updated pattern. Not really carbon fiber, but it’s the most popular pattern, so I’ll give you an extra choice.
Source Atle Mo
Eight Horns #1325
Light CC BY-SA 3.0Looks like an old rug or a computer chip.
Source Patutin Sergey
Cubes #133
Light CC BY-SA 3.0This reminds me of Game Cube. A nice light 3D cube pattern.
Source Sander Ottens
White Sand@2X #20
Light CC BY-SA 3.0Same as gray sand but lighter. A sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
Decorative divider 283 #1856
Dark CC 0From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
Double Lined #51
Stripes CC BY-SA 3.0Horizontal and vertical lines on a light gray background.
Source Adam Anlauf
"Wide Stripe Wallpaper", Seamless Pattern #970
Stripes CC BY-SA 3.0A seamless pattern with wide vertical stripes colored in pale yellow.
Source V. Hartikainen
Paper model of a tetrahedron #139
Unknow CC 0Paper model of a tetrahedron. Modelo de papel de um tetraedro.
Source laobc
Confectionary #1342
Light CC BY-SA 3.0This could be a hippy vintage wallpaper.
Source Tileable Patterns
Abstract Water Texture (Seamless) #890
Water CC BY-SA 3.0An abstract texture of water. It's not perfect, but will do. You may download if you like it.
Source V. Hartikainen
Wavy background #2016
Pink CC 0A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Noisy Net #976
Dark CC BY-SA 3.0Little x’es, noise and all the stuff you like. Dark like a Monday, with a hint of blue.
Source Tom McArdle
Nasty Fabric@2X #1009
Gray CC BY-SA 3.0Nasty or not, it’s a nice pattern that tiles. Like they all do.
Source Badhon Ebrahim
Lined Paper@2X #1035
Light CC BY-SA 3.0I know there is one here already, but this is sexy!
Source Gjermund Gustavsen