You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
Prismatic Polka Dots Mark II 3 No Background
Source GDJ
Classic 45-degree pattern, light version.
Source Luke McDonald
Background formed from the original with an emboss effect.
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless dark leather-like background texture with diagonal lines that look like stitches.
Source V. Hartikainen
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Colorful Floral Background 3 No Black
Source GDJ
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
An orange vertically striped background pattern. Feel free to download and use this orange background pattern, for example, on the web). It resembles a wallpaper with vertical stripes or something similar to it.
Source V. Hartikainen
Bumps, highlight and shadows – all good things.
Source Badhon Ebrahim
The image is a seamless pattern of a fishnet.
Source Yamachem
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A free seamless background pattern for use on websites.
Source V. Hartikainen
A seamless pattern the starting point for which was a 'colour modulo' texture in Paint.net.
Source Firkin
Inspired by this, I came up with this pattern. Madness!
Source Atle Mo
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
Could be paper, could be a Polaroid frame – up to you!
Source Chaos
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