A seamless texture of a rough concrete surface.
Source V. Hartikainen
Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
Black brick wall pattern. Brick your site up!
Source Alex Parker
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
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
Zero CC asphalt, pavement, texture, photographed and made by me. CC0 WARNING I FOUND A SEAM ON THIS TEXTURE
Source Sojan Janso
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
White fabric looking texture with some nice random wave features.
Source Hendrik Lammers
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Retro Circles Background 8 No Black
Source GDJ
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
He influenced us all. “Don’t be sad because it’s over. Smile because it happened.”
Source Atle Mo
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
Remixed from a drawing in 'Works. Popular edition', John Ruskin, 1886.
Source Firkin
From a drawing in 'Prose and Verse ', William Linton, 1836.
Source Firkin
Love the style on this one, very fresh. Diagonal diamond pattern. Get it?
Source INS
Because I love dark patterns, here is Brushed Alum in a dark coating.
Source Tim Ward
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo