Prismatic Hypnotic Pattern No Background
Source GDJ
Lovely pattern with splattered vintage speckles.
Source David Pomfret
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Seamless pattern the basic tile for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A floral background formed from numerous clones of flower 117.
Source Firkin
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
ZeroCC tileable wood boards texture, photographed and made by me. CC0
Source Sojan Janso
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Heavily remixed from a drawing that was uploaded to Pixabay by ractapopulous
Source Firkin
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
Just like your old suit, all striped and smooth.
Source Alex Berkowitz
This seamless background image should look nice on websites. It has a dark blue gray texture with vertical stripes, it tiles seamlessly and, like all of the background images here, it's free. So, if you like it, take it!
Source V. Hartikainen
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Inspired by the B&O Play, I had to make this pattern.
Source Atle Mo
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective