Nice and simple crossed lines in dark gray tones.
Source Stefan Aleksić
Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
A cute x, if you need that sort of thing.
Source Juan Scrocchi
This seamless pattern consists of a blue grid on a yellow background.
Source V. Hartikainen
Prismatic Abstract Background Design No Black
Source GDJ
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
A heavy dark gray base, some subtle noise and a 45-degree grid makes this look like a pattern with a tactile feel to it.
Source Atle Mo
This one is amazing, truly original. Go use it!
Source Viahorizon
A background pattern with green vertical stripes. A new striped background pattern. This time a green one.
Source V. Hartikainen
Beautiful dark noise pattern with some dust and grunge.
Source Vincent Klaiber
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A free seamless background with pink spots.
Source V. Hartikainen
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Continuing the geometric trend, here is one more.
Source Mike Warner
Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
Seamless Prismatic Pythagorean Line Art Pattern No Background. A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
Prismatic Curved Diamond Pattern 7 No Background
Source GDJ
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
Prismatic Abstract Geometric Background 2
Source GDJ
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed