Escheresque #777
Light CC BY-SA 3.0Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
More Textures
Lichen #1293
Stone CC 0Zero CC tileable moss or lichen covered stone texture, edited from pixabay. CC0
Source Sojan Janso
Background pattern 306 (colour 5) #1879
Colorful CC 0Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Gray Sand@2X #18
Dark CC BY-SA 3.0A dark gray, sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
Flower Trail@2X #742
Noise CC BY-SA 3.0Sharp pixel pattern, just like the good old days.
Source Paridhi
Floral background 22 (colour) #1779
Green CC 0From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Background pattern 223 (colour 3) #2351
Green CC 0Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Background pattern 7 #227
Noise CC 0Pattern that came out of playing with the 'slinky' plug-in for Paint.net
Source Firkin
Background pattern 262 #2075
Dark CC 0Inspired by a pattern found in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Confectionary #1342
Light CC BY-SA 3.0This could be a hippy vintage wallpaper.
Source Tileable Patterns
Circular frame 26 #1711
Dark CC 0Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Background pattern 246 #2186
Red CC 0This was formed by distorting an image of a background on Pixabay.
Source Firkin
Prismatic Snowflakes Pattern No Background #411
Light CC 0Prismatic Snowflakes Pattern No Background
Source GDJ
Paper 2 #21
Paper CC BY-SA 3.0New paper pattern with a slightly organic feel to it, using some thin threads.
Source Atle Mo
Background pattern 220 (colour) #2359
Pink CC 0Colour version of the original seamless pattern.
Source Firkin
Dimension #1173
Light CC BY-SA 3.0Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
Parquet flooring pattern (colour 2) #2426
Green CC 0A seamless pattern recreated from an image on Pixabay. It is reminiscent of parquet flooring and is formed from a square tile, which can be recovered in Inkscape by selecting the ungrouped rectangle and using shift-alt-I together.
Source Firkin
Red & Black Well #1260
Wall CC 0Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Background pattern 255 (colour) #2141
Brown CC 0Colour version of the original pattern.
Source Firkin
Gradient Squares@2X #694
Grid CC BY-SA 3.0It’s big, it’s gradient—and it’s square.
Source Brankic1979
Seamless Blue On Yellow Background #1160
Grid CC BY-SA 3.0This seamless pattern consists of a blue grid on a yellow background.
Source V. Hartikainen