Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
This is a semi-dark pattern, sort of linen-y.
Source Sagive SEO
Prismatic Polyskelion Pattern No Background
Source GDJ
The classic notebook paper with horizontal stripes.
Source Are Sundnes
Neat little photography icon pattern.
Source Hossam Elbialy
Formed from decorative divider 184 in paint.net. Vectorised with Vector Magic.
Source Firkin
A free black metallic background pattern. Here's a new pattern I made that looks metallic.
Source V. Hartikainen
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
Formed by heavily distorting part of a an image of a fish uploaded to Pixabay by GLady
Source Firkin
A background tile for web with abstract repeating texture of dark "stone wall".
Source V. Hartikainen
An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav
Dark, square, clean and tidy. What more can you ask for?
Source Jaromír Kavan
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Light honeycomb pattern made up of the classic hexagon shape.
Source Federica Pelzel
A free seamless background texture of "timber wall" (colored in dark brown).
Source V. Hartikainen