A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
The image depicts a seamless pattern of Japanese Edo pattern called "kikkou-matsu" or "亀甲松" meaning " tortoiseshell-pinetree".The real pinetree is like this: https://jp.pinterest.com/pin/500744052301065077/
Source Yamachem
From a drawing in 'Cassell's Library of English Literature', Henry Morley, 1883.
Source Firkin
I love these crisp, tiny, super subtle patterns.
Source Badhon Ebrahim
Adapted from an image that was uploaded to Pixabay by Anerma.
Source Firkin
I guess this is inspired by the city of Ravenna in Italy and its stone walls.
Source Sentel
A lot of people like the icon patterns, so here’s one for your restaurant blog.
Source Andrijana Jarnjak
Dark blue concrete wall with some small dust spots.
Source Atle Mo
Prismatic Snowflakes Pattern 2 No Background
Source GDJ
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
Tiny little fibers making a soft and sweet look.
Source Badhon Ebrahim
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
This ladies and gentlemen, is texturetastic! Love it.
Source Adam Pickering
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
A background pattern with blue on white vertical stripes.
Source V. Hartikainen
This ladies and gentlemen, is texturetastic! Love it.
Source Adam Pickering
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin