Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Prismatic Groovy Concentric Background 2 No Black
Source GDJ
Background formed from the original with an emboss effect
Source GDJ
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Light square grid pattern, great for a “DIY projects” sort of website, maybe?
Source Rafael Almeida
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
Bit of a strange name on this one, but still nice. Tiny gray square things.
Source Carlos Valdez
Remixed 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
The original enhanced with some gradients.
Source Firkin
Heavy depth and shadows here, but might work well on some mobile apps.
Source Damian Rivas
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
I asked Gjermund if he could make a pattern for us – result!
Source Gjermund Gustavsen
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
You guessed it – looks a bit like cloth.
Source Peax Webdesign
From a drawing in 'Hubert Montreuil, or the Huguenot and the Dragoon', Francisca Ouvry, 1873.
Source Firkin
Pattern Background, Texture, Photoshop Structure style CC0 texture.
Source Darkmoon1968
Hey, you never know when you’ll need a bird pattern, right?
Source Pete Fecteau
Black And White Floral Pattern Background from PDP.
Source GDJ
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Zero CC tileable wood texture, made by me procedurally in Neo Texture Edit.
Source Sojan Janso