One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
Inspired by a pattern seen on a public domain image of a very old tile. To get the unit cell, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
The image depicts a seamless pattern of a Japanese family crest called "chidori" in Japanese .A chidori in Japanese means a plover in English.
Source Yamachem
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Derived from an image that was uploaded to Pixabay by Kaz
Source Firkin
ZeroCC tileable mossy (lichen) stone texture, edited from pixabay. CC0
Source Sojan Janso
Horizontal and vertical lines on a light gray background.
Source Adam Anlauf
Light honeycomb pattern made up of the classic hexagon shape.
Source Federica Pelzel
Derived from an image that was uploaded to Pixabay by Kaz
Source Firkin
Awesome name, great pattern. Who does not love space?
Source Nick Batchelor
Prismatic Curved Diamond Pattern No Background
Source GDJ
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
Same classic 45-degree pattern, dark version.
Source Luke McDonald
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Non-seamless pattern drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
This is so subtle you need to bring your magnifier!
Source Carlos Valdez
From a drawing in 'Cowdray: the history of a great English House', Julia Roundell, 1884.
Source Firkin
Bumps, highlight and shadows – all good things.
Source Badhon Ebrahim
From a drawing in 'Picturesque New Guinea', J Lindt, 1887.
Source Firkin
An alternative colour scheme to the original seamless pattern.
Source Firkin
Zero CC tileable ground (#2) cracked, crackled texture, made by me. CC0
Source Sojan Janso
Orange-red pattern for tiled backgrounds.
Source V. Hartikainen