Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Abstract Arbitrary Geometric Background derived from an image on Pixabay.
Source GDJ
Same as Silver Scales, but in black. Turn your site into a dragon with this great scale pattern.
Source Alex Parker
A seamless pattern based on a rectangular tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
From a drawing in 'Danmarks Riges Historie af J. Steenstrup, Kr. Erslev, A. Heise, V. Mollerup, J. A. Fridericia, E. Holm, A. D. Jørgensen', 1897.
Source Firkin
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Based on several public domain drawings on Wikimedia Commons. This was formed from a rectangular tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
More leather, and this time it’s bigger! You know, in case you need that.
Source Elemis
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
Derived from an image that was uploaded to Pixabay by Kaz
Source Firkin
I love cream! 50x50px and lovely in all the good ways.
Source Thomas Myrman
A seamless texture of an abstract wall colored in shades of light orange brown.
Source V. Hartikainen
Geometric triangles seem to be quite hot these days.
Source Pixeden
Super detailed 16×16 tile that forms a beautiful pattern of straws.
Source Pavel
Washi (和紙?) is a type of paper made in Japan. Here’s the pattern for you!
Source Carolynne
ZeroCC tileable stone texture, edited from pixabay. CC0
Source Sojan Janso
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
An interesting dark spotted pattern at an angle.
Source Hendrik Lammers