ZeroCC tileable moss texture, photographed and made by me. CC0
Source Sojan Janso
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Prismatic Groovy Concentric Background 4 No Black
Source GDJ
I love these crisp, tiny, super subtle patterns.
Source Badhon Ebrahim
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
Inspired by the B&O Play, I had to make this pattern.
Source Atle Mo
A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib
This is a more minute version of "fishnet 01".The image depicts a seamless pattern of a fishnet with a plenty of fish.It may be a lucky charm for fishermen.
Source Yamachem
8 by 8 pixels, and just what the title says.
Source pixilated
Pattern that came out of playing with the 'slinky' plug-in for Paint.net
Source Firkin
Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
A repeatable image with dark background and metal grid pattern.
Source V. Hartikainen
Derived from an image that was uploaded to Pixabay by mdmelo.
Source Firkin
I have no idea what J Boo means by this name, but hey – it’s hot.
Source j Boo
Just like the black maze, only in light gray. Duh.
Source Peax
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
From a drawing in 'Storia del Palazzo Vecchio in Firenze', Aurelio Gotti, 1889.
Source Firkin
A yellow tiled background... Blurriness, bokeh effect and rectangles pattern in one mix.
Source V. Hartikainen