ZeroCC tileable moss texture, photographed and made by me. CC0
Source Sojan Janso
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz
A dark pattern made out of 3×3 circles and a 1px shadow. This works well as a carbon texture or background.
Source Atle Mo
Seamless pattern made from a tile that can be obtained in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Awesome name, great pattern. Who does not love space?
Source Nick Batchelor
Almost like little fish shells, or dragon skin.
Source Graphiste
Light gray paper pattern with small traces of fiber and some dust.
Source Atle Mo
As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Here's a subtle marble-like background for use on websites.
Source V. Hartikainen
The file was named striped lens, but hey – Translucent Fibres works too.
Source Angelica
Prismatic Polka Dots 3 No Background
Source GDJ
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
Abstract Tiled Background Extended 12
Source GDJ
A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk