Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
So tiny, just 7 by 7 pixels – but still so sexy. Ah yes.
Source Dmitriy Prodchenko
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Number 2 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
A dark gray, sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
Alternative colour scheme for the original floral pattern.
Source Firkin
I guess this is inspired by the city of Ravenna in Italy and its stone walls.
Source Sentel
Prismatic Groovy Concentric Background 3
Source GDJ
Looks a bit like concrete with subtle specks spread around the pattern.
Source Mladjan Antic
A tile-able background for websites with paper-like texture and a grid pattern layered on top of it.
Source V. Hartikainen
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Inspired by this, I came up with this pattern. Madness!
Source Atle Mo
Nicely crafted paper pattern, although a bit on the large side (500x593px).
Source Blaq Annabiosis
A seamless pattern formed from background pattern 102
Source Firkin
Dark wooden pattern, given the subtle treatment. based on texture from Cloaks. https://cloaks.deviantart.com
Source Atle Mo
Nice and simple crossed lines in dark gray tones.
Source Stefan Aleksić
Basket Fibers, Basket Texture, Braid Background style CC0 texture.
Source 1A-Photoshop
A series of 5 patterns. That’s what the P stands for, if you didn’t guess it.
Source Dima Shiper
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Prismatic Polyskelion Pattern No Background
Source GDJ