From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Nothing like a clean set of bed sheets, huh?
Source Badhon Ebrahim
An alternative colour scheme to the original seamless pattern.
Source Firkin
The file was named striped lens, but hey – Translucent Fibres works too.
Source Angelica
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
Remixed from a drawing in 'Canadian forest industries July-December', 1915
Source Firkin
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A free seamless background image with abstract texture of green "curtain".
Source V. Hartikainen
From a drawing in 'An Old Maid's Love. A Dutch tale told in English', Maarten Maartens, 1891.
Source Firkin
I love these crisp, tiny, super subtle patterns.
Source Badhon Ebrahim
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using 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
A free tileable background colored in off-white (antique white) color.
Source V. Hartikainen
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
ZeroCC tileable wood boards texture, photographed and made by me. CC0
Source Sojan Janso
Dark and hard, just the way we like it. Embossed triangles makes a nice pattern.
Source Ivan Ginev
Basket Fibers, Basket Texture, Braid Background style CC0 texture.
Source 1A-Photoshop
Submitted by DomainsInfo – wtf, right? But hey, a free pattern.
Source DomainsInfo
And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio