Seamless pattern the basic tile for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
The classic notebook paper with horizontal stripes.
Source Are Sundnes
Prismatic Curved Diamond Pattern 2 No Background
Source GDJ
Here's a new paper-like background for free use on personal and commercial projects (this applies to all background patterns here).
Source V. Hartikainen
Prepared mostly as a raster in Paint.net and vectorised.
Source Firkin
Sharp pixel pattern, just like the good old days.
Source Paridhi
Here's a new background image for websites with a seamless pink texture. It should look beautiful with website themes where light pink background is needed. The background is seamless, therefore it should be used as a tiled background.
Source V. Hartikainen
A comeback for you: the popular Escheresque, now in black.
Source Patten
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
An abstract pale yellow paper-like background with stains colored in yellow and green.
Source V. Hartikainen
A seamless pattern based on a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
Formed by distorting a JPG from PublicDomainPictures
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian
CC0 and seamless wellington boot pattern.
Source SliverKnight
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
Prismatic Abstract Geometric Background 5
Source GDJ
Free tiled background with colorful stripes and white splatter.
Source V. Hartikainen
Just what the name says, paper fibers. Always good to have.
Source Heliodor jalba
A very slick dark rubber grip pattern, sort of like the grip on a camera.
Source Sinisha
A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Colourful background achieved with gradient fills.
Source Firkin
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso