A seamless pattern with a unit cell drawn as a bitmap in Paint.net and vectorized in Vector Magic.
Source Firkin
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
Light gray pattern with an almost wall tile-like appearance.
Source Markus Tinner
The name is totally random, but hey, it sounds good.
Source Atle Mo
Fix and cc0 to get the tile this is based on.
Source SliverKnight
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
Seamless pattern made from a tile that can be obtained in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Remixed from a raster on Pixabay, that was uploaded by ArtsyBee.
Source Firkin
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Square design drawn in Paint.net and vectorized in Vector Magic.
Source Firkin
Green Web Background, Seamless tile.
Source V. Hartikainen
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
Remixed from a drawing in 'Paul's Sister', Frances Peard, 1889.
Source Firkin
Prismatic Abstract Geometric Background 5 No Black
Source GDJ
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
A light gray wall or floor (you decide) of concrete.
Source Atle Mo
Prismatic Floral Background No Black
Source GDJ
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
Sharp pixel pattern, just like the good old days.
Source Paridhi
The base gradient edited so now more details are rendered.
Source Lazur URH
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
This is the remix of "Tileable Wave Pattern 2" uploaded by "Arvin61r58".Thanks.I added a wire-mesh fence seamless pattern as a lower layer.
Source Yamachem