One more sharp little tile for you. Subtle circles this time.
Source Blunia
From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
Looks like an old rug or a computer chip.
Source Patutin Sergey
ZeroCC tileable moss texture, photographed and made by me. CC0
Source Sojan Janso
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A pale olive green background with a seamless texture.
Source V. Hartikainen
A seamless paper background colored in pale yellow.
Source V. Hartikainen
Wild Oliva or Oliva Wilde? Darker than the others, sort of a medium dark pattern.
Source Badhon Ebrahim
Remixed from an image on Pixabay, the original having been uploaded by darkmoon1968.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Colour version of the original pattern inspired by the front cover of 'Old and New Paris', Henry Edwards, 1894.
Source Firkin
Prismatic Isometric Cube Wireframe Pattern No Background
Source GDJ
A dark background pattern/texture of a dimpled metal plate.
Source V. Hartikainen
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Almost like little fish shells, or dragon skin.
Source Graphiste
Number 4 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
A seamless pattern with a unit cell drawn as a bitmap in Paint.net and vectorized in Vector Magic.
Source Firkin
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
This is indeed a bit strange, but here’s to the crazy ones!
Source Christopher Buecheler