A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
From a drawing in 'Prose and Verse ', William Linton, 1836.
Source Firkin
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Everyone needs some stardust. Sprinkle it on your next project.
Source Atle Mo
Prismatic Polka Dots Mark II No Background
Source GDJ
Bumps, highlight and shadows – all good things.
Source Badhon Ebrahim
This pattern comes in orange, and it looks as if it is "made of glass".
Source V. Hartikainen
I guess this is inspired by the city of Ravenna in Italy and its stone walls.
Source Sentel
From a drawing in 'Two Women in the Klondike', Mary Hitchcock, 1899.
Source Firkin
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Prismatic 3D Isometric Tessellation Pattern 6
Source GDJ
Everyone needs some stardust. Sprinkle it on your next project.
Source Atle Mo
Background formed from the original with an emboss effect
Source GDJ
Number 4 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
A seamless dark leather-like background texture with diagonal lines that look like stitches.
Source V. Hartikainen
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian