A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Alternative colour scheme for the original floral pattern.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
Submitted as a black pattern, I made it light and a few steps more subtle.
Source Andy
This is so subtle: We’re talking 1% opacity. Get your squint on!
Source Atle Mo
Used a cherry by doctormo to make this seamless pattern
Source Firkin
Orange-red pattern for tiled backgrounds.
Source V. Hartikainen
Lovely pattern with splattered vintage speckles.
Source David Pomfret
Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
This ons is quite old school looking. Retro, even. I like it.
Source Arno Declercq
Found on the ground in french cafe in kunming, Yunnan, china
Source Rejon
Prismatic Groovy Concentric Background 3 No Black
Source GDJ
A background tile for web with abstract repeating texture of dark "stone wall".
Source V. Hartikainen
Derived from an image that was uploaded to Pixabay by mdmelo.
Source Firkin
From an image on opengameart.org shared by rubberduck.
Source Firkin
The original enhanced with one of Inkscapes's filters.
Source Firkin
Prismatic Polyskelion Pattern No Background
Source GDJ
A brown seamless wood texture in a form of stripe pattern. The result has turned out pretty well, in my opinion.
Source V. Hartikainen
A seamless pattern formed from a sports car on clker.com. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Have you wondered about how it feels to be buried alive? Here is the pattern for it.
Source Hendrik Lammers
Zero CC tileable hard cover green book, scanned and made by me. CC0
Source Sojan Janso
A smooth mid-tone gray, or low contrast if you will, linen pattern.
Source Jordan Pittman
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin