If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra
A seamless stone-like background for blogs or any other type of websites.
Source V. Hartikainen
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
Number 5 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
A seamless textured paper for backgrounds. Colored in pale orange hues.
Source V. Hartikainen
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
It’s like Shine Dotted’s sister, only rotated 45 degrees.
Source mediumidee
Abstract Tiled Background Extended 11
Source GDJ
8 by 8 pixels, and just what the title says.
Source pixilated
Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Same classic 45-degree pattern, dark version.
Source Luke McDonald
Pattern Background, Texture, Photoshop Structure style CC0 texture.
Source Darkmoon1968
You know, tiny and sharp. I’m sure you’ll find a use for it.
Source Atle Mo
A seamless pattern formed from miutopia's cakes on a tablecloth.
Source Firkin