This was formed by distorting an image of a background on Pixabay.
Source Firkin
Nice and simple crossed lines in dark gray tones.
Source Stefan Aleksić
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A black tile-able background with paper-like texture.
Source V. Hartikainen
A seamless background colored in pale orange. It has a paper like texture with diagonal grid pattern.
Source V. Hartikainen
Just like your old suit, all striped and smooth.
Source Alex Berkowitz
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
Coming in at 666x666px, this is an evil big pattern, but nice and soft at the same time.
Source Atle Mo
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
The image is a seamless pattern of a fishnet.
Source Yamachem
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
From a drawing in 'A Guide to the Guildhall of the City of London', John Baddeley, 1898.
Source Firkin
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Love the style on this one, very fresh. Diagonal diamond pattern. Get it?
Source INS
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Dark, square, clean and tidy. What more can you ask for?
Source Jaromír Kavan
Pattern Background, Texture, Photoshop Structure style CC0 texture.
Source Darkmoon1968
With a name this awesome, how can I go wrong?
Source Nikolay Boltachev
A background formed from an image of an old tile on the New York Metropolitan Museum of Art website. To get the base tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Classic vertical lines, in all its subtlety.
Source Cody L
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective