A seamless background texture of old cardboard.
Source V. Hartikainen
This one is super crisp at 2X. Lined paper with some dust and scratches.
Source HQvectors
Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
By popular request, an outline version of the pentagon pattern.
Source Atle Mo
Geometric triangles seem to be quite hot these days.
Source Pixeden
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
Pattern Background, Texture, Photoshop Structure style CC0 texture.
Source Darkmoon1968
In the spirit of WWDC 2011, here is a dark iOS inspired linen pattern.
Source Atle Mo
An aged paper background tile with smeared and pressed text.
Source V. Hartikainen
Prismatic Hexagonalism Pattern No Background
Source GDJ
A seamless green background texture. The image is distributed under a Creative Commons License (like all of the images here).
Source V. Hartikainen
From a drawing in 'Bond Slaves. The story of a struggle.', Isabella Varley, 1893.
Source Firkin
Inspired by an image that was uploaded to Pixabay by geralt
Source Firkin
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A bit simplified version. Although it could be edited out to be simpler. Anyway, this time the tiling is converted to a pattern fill -which is using clipping for the tile's edges.
Source Lazur URH
Zero CC tileable ground cracked, crackled, texture, made by me.
Source Sojan Janso
A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
Remixed from a drawing that was uploaded to Pixabay by captenpub.
Source Firkin
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
A new take on the black linen pattern. Softer this time.
Source Atle Mo
A free tileable background colored in off-white (antique white) color.
Source V. Hartikainen