From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
Super detailed 16×16 tile that forms a beautiful pattern of straws.
Source Pavel
Background Wall, Art Abstract, Blue Well & CC0 texture.
Source Ractapopulous
Geometric triangles seem to be quite hot these days.
Source Pixeden
Awesome name, great pattern. Who does not love space?
Source Nick Batchelor
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
From a drawing in 'Heroes of North African Discovery', Nancy Meugens, 1894.
Source Firkin
A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
Submitted by DomainsInfo – wtf, right? But hey, a free pattern.
Source DomainsInfo
Horizontal and vertical lines on a light gray background.
Source Adam Anlauf
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Prismatic Groovy Concentric Background 2
Source GDJ
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav
Kaleidoscope Prismatic Abstract No Background
Source GDJ
The perfect pattern for all your blogs about type, or type-related matters.
Source Atle Mo
Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Fix side and a seamless pattern formed from circles.
Source SliverKnight
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Black And White Floral Pattern Background Inverse
Source GDJ