Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
Background pattern originally a PNG drawn in Paint.net
Source Firkin
Heavy depth and shadows here, but might work well on some mobile apps.
Source Damian Rivas
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Derived from a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
Prismatic Geometric Tessellation Pattern 2 No Background
Source GDJ
The image is a seamless pattern of a fishnet.
Source Yamachem
We have some linen patterns here, but none that are stressed. Until now.
Source Jordan Pittman
Here's a dark background pattern that contains a steel grid pattern as a texture. Use it as a website background or for other purposes. It's free!
Source V. Hartikainen
Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
Remixed from a raster on Pixabay that was uploaded by ArtsyBee.
Source Firkin
Never out of fashion and so much hotter than the 45º everyone knows, here is a sweet 60º line pattern.
Source Atle Mo
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
This is a remix of "blue wave-seigaiha".I hope this subtle color version of Seigaiha would be suitable for background .
Source Yamachem
Just like your old suit, all striped and smooth.
Source Alex Berkowitz
This is a hot one. Small, sharp and unique.
Source GraphicsWall
Zero CC tileable bark texture, photographed and made by me. CC0
Source Sojan Janso
Geometric triangles seem to be quite hot these days.
Source Pixeden
Zero CC tileable wood texture, made by me procedurally in Neo Texture Edit.
Source Sojan Janso
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
Old China with a modern twist, take two.
Source Adam Charlts