Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Sounds like something from World of Warcraft. Has to be good.
Source Tony Kinard
This is so subtle you need to bring your magnifier!
Source Carlos Valdez
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
A pattern drawn in Paint.net and vectorized in Inkscape.
Source Firkin
A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
New paper pattern with a slightly organic feel to it, using some thin threads.
Source Atle Mo
Here's a dark background pattern that contains a steel grid pattern as a texture. Use it as a website background or for other purposes. It's free!
Source V. Hartikainen
Zero CC asphalt, pavement, texture, photographed and made by me. CC0 WARNING I FOUND A SEAM ON THIS TEXTURE
Source Sojan Janso
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Remixed from a JPG that was uploaded to Pixabay by theasad121
Source Firkin
A version without colours blended together to give a different look.
Source Firkin
From a drawing in 'Royal Ramsgate', James Simson, 1897.
Source Firkin
The tile can be had by using shift+alt+i on the selected rectangle in Inkscape
Source Firkin
From a drawing in 'Uit de geschiedenis der Heilige Stede te Amsterdam', Yohannes Sterck, 1898.
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
ZeroCC tileable wood boards texture, photographed and made by me. CC0
Source Sojan Janso
To get the repeating unit, select the rectangle in Inkscape and use shift+alt+i
Source Firkin