Diamond pattern (colour 4) #2282
Blue CC 0From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
More Textures
Vintage pattern 2 #2295
Yellow CC 0Inspired by a pattern seen on a public domain image of a very old tile. To get the unit cell, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Mossy Wall #1269
Wall CC 0Zero CC Mossy stone tileable texture, photographed and made by me. CC0
Source Sojan Janso
Seamless tile 4 #1812
Red CC 0Not strictly seamless in that opposite edges are not identical. But they do marry up to make an interesting pattern
Source Firkin
Escheresque Dark #1064
Dark CC BY-SA 3.0A comeback for you: the popular Escheresque, now in black.
Source Patten
Nistri #773
Stripes CC BY-SA 3.0No idea what Nistri means, but it’s a crisp little pattern nonetheless.
Source Markus Reiter
Inspiration Geometry #1175
Unknow CC BY-SA 3.0This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
Decorative divider #2001
Dark CC 0From a drawing in 'La Principauté de Liège et les Pays-Bas au XVIe siècle', Société des Bibliophiles Liégeois ,1887.
Source Firkin
Wavy background #2020
Green CC 0CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Navy #984
Dark CC BY-SA 3.0It was called Navy Blue, but I made it dark. You know, the way I like it.
Source Ethan Hamilton
Noisy Grid #959
Gray CC BY-SA 3.0This is a grid, only it’s noisy. You know. Reminds you of those printed grids you draw on.
Source Vectorpile
Chipboard #2581
Wood CC 0A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Subtle White Feathers #1103
Light CC BY-SA 3.0This one is amazing, truly original. Go use it!
Source Viahorizon
Background pattern 246 (colour 5) #2182
Colorful CC 0This was formed by distorting an image of a background on Pixabay.
Source Firkin
Fleurs-de-lys pattern 2 (colour) #2204
Colorful CC 0Colour version of the original pattern inspired by the front cover of 'Old and New Paris', Henry Edwards, 1894.
Source Firkin
Grilled Noise #581
Fabric CC BY-SA 3.0You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
Gray Lines #913
Light CC BY-SA 3.0Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
Dark Brown Fabric-Like Texture #963
Stripes CC BY-SA 3.0A seamless striped fabric-like texture colored in a dark reddish brown color.
Source V. Hartikainen
Background pattern 245 (colour 4) #2189
Yellow CC 0This was formed by distorting an image of a background on Pixabay.
Source Firkin