The classic notebook paper with horizontal stripes.
Source Are Sundnes
Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
This is a remix of "blue wave-seigaiha".I hope this subtle color version of Seigaiha would be suitable for background .
Source Yamachem
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless pattern formed from a square tile based on a jpg on Pixabay. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin
A repeating gloomy background image. This one consists of a pattern of black chains layered on top of a dark textured background.
Source V. Hartikainen
Bumps, highlight and shadows – all good things.
Source Badhon Ebrahim
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
Dark wooden pattern, given the subtle treatment. based on texture from Cloaks.
Prismatic Hexagonalist Pattern No Background
Source GDJ
Prismatic Polka Dots 3 No Background
Source GDJ
Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A set of paper filters. The base texture is generated the same way, only the compositing mode is varied.
Source Lazur URH
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
This background pattern has futuristic look. So, maybe it could be used on websites or blogs dedicated to video games?!
Source V. Hartikainen
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green
An abstract texture of black metal pipes (seamless).
Source V. Hartikainen
The name is totally random, but hey, it sounds good.
Source Atle Mo
A series of 5 patterns. That’s what the P stands for, if you didn’t guess it.
Source Dima Shiper
The Grid. A digital frontier. I tried to picture clusters of information as they traveled through the computer.
Source Haris Šumić