Dark Tile-able Grunge Texture. I think this texture can be classified as grunge. It's free and seamless, as always.
Source V. Hartikainen
Looks like an old wall. I guess that’s it then?
Source Viahorizon
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
Prismatic Abstract Geometric Background 5 No Black
Source GDJ
Prismatic Hexagonalism Pattern No Background
Source GDJ
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
A seamless background pattern with impressed gray dots.
Source V. Hartikainen
A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
This one is amazing, truly original. Go use it!
Source Viahorizon
Pixel by pixel, sharp and clean. Very light pattern with clear lines.
Source M.Ashok
More in the paper realm, this time with fibers.
Source Jorge Fuentes
Colorful Floral Background 3 No Black
Source GDJ
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Geometric lines are always hot, and this pattern is no exception.
Source Listvetra
Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
A repeating background of thick textured paper. Actually, it turned out to look like something between a paper and fabric.
Source V. Hartikainen
An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin