A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
The following repeating website background is colored in a blue gray color and resembles a concrete wall or something similar to it.
Source V. Hartikainen
Classic vertical lines, in all its subtlety.
Source Cody L
Inspired by an image that was uploaded to Pixabay by geralt
Source Firkin
Farmer could be some sort of fabric pattern, with a hint of green.
Source Fabian Schultz
A slightly grainy paper pattern with small horizontal and vertical strokes.
Source Atle Mo
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Sounds like something from World of Warcraft. Has to be good.
Source Tony Kinard
A nice one indeed, but I have a feeling we have it already? If you spot a copy, let me know on Twitter.
Source Graphiste
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
A smooth mid-tone gray, or low contrast if you will, linen pattern.
Source Jordan Pittman
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Derived from an image that was uploaded to Pixabay by mdmelo.
Source Firkin
Heavy depth and shadows here, but might work well on some mobile apps.
Source Damian Rivas
Looks like an old rug or a computer chip.
Source Patutin Sergey
Old China with a modern twist, take two.
Source Adam Charlts
Because I love dark patterns, here is Brushed Alum in a dark coating.
Source Tim Ward
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
Super dark, crisp and detailed. And a Kill Bill reference.
Source Badhon Ebrahim
A seamless paper background colored in pale yellow.
Source V. Hartikainen
And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio
A repeating background for websites with a texture of black groove stripes.
Source V. Hartikainen
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
Zero CC tileable wood texture, made by me procedurally in Neo Texture Edit.
Source Sojan Janso
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall