A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
A lot of people like the icon patterns, so here’s one for your restaurant blog.
Source Andrijana Jarnjak
This texture looks like old leather. It should look great as a background on web pages.
Source V. Hartikainen
Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
Seamless tile drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
Seamless Light Background Texture.
Source V. Hartikainen
Not strictly seamless in that opposite edges are not identical. But they do marry up to make an interesting pattern
Source Firkin
On a large canvas you can see it tiling, but used on smaller areas, it’s beautiful.
Source Paul Phönixweiß
A background tile for web with abstract repeating texture of dark "stone wall".
Source V. Hartikainen
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
A textured orange background pattern with vertical stripes.
Source V. Hartikainen
Prismatic Groovy Concentric Background No Black
Source GDJ
Because I love dark patterns, here is Brushed Alum in a dark coating.
Source Tim Ward
A nice and simple gray stucco material. Great on its own, or as a base for a new pattern.
Source Bartosz Kaszubowski
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
Here's a repeatable texture that resembles a light green concrete wall or something similar.
Source V. Hartikainen
Floral patterns might not be the hottest thing right now, but you never know when you need it!
Source Lauren