Escheresque@2X #778
Light CC BY-SA 3.0Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
More Textures
Tessellation 16 (colour 3) #2213
Green CC 0The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Page ornament 21 #2361
Dark CC 0From a design in 'Storia del Palazzo Vecchio in Firenze', Aurelio Gotti, 1889.
Source Firkin
Graphy #350
Grid CC BY-SA 3.0Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
Fabric of Squares #1095
Light CC BY-SA 3.0As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
Diamond Upholstery #767
Diamond CC BY-SA 3.0A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
Floral background 20 #1813
Red CC 0Derived from a drawing in 'Elfrica. An historical romance of the twelfth century', Charlotte Boger, 1885
Source Firkin
Pinstriped Suit@2X #666
Dark CC BY-SA 3.0Just like your old suit, all striped and smooth.
Source Alex Berkowitz
Prismatic Polka Dots 3 No Background@2X #529
Noise CC 0Prismatic Polka Dots 3 No Background
Source GDJ
Color Stains on Canvas #1167
Fabric CC BY-SA 3.0A seamless web texture with illustration of pale color stains on canvas.
Source V. Hartikainen
Subtle White Mini Waves #1322
Unknow CC BY-SA 3.0Tiny circle waves, almost like the ocean.
Source Sagive
Fabric pattern 2 (colour 6) #2391
Fabric CC 0Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Green Dust & Scratches #107
Wall CC BY-SA 3.0Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
Subtle Grunge@2X #1041
Light CC BY-SA 3.0A heavy hitter at 400x400px, but lovely still.
Source Breezi
Decorative divider 200 #2420
Dark CC 0From a drawing in 'Heroes of North African Discovery', Nancy Meugens, 1894.
Source Firkin
Dark Wall #817
Dark CC BY-SA 3.0Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
Background pattern 309 (colour 4) #1863
Green CC 0Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Page ornament #1988
Dark CC 0From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Background pattern 291 #1931
Dark CC 0To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Background pattern 235 #2255
Yellow CC 0To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Groovy Concentric Background 2 No Black@2X #456
Noise CC 0Prismatic Groovy Concentric Background 2 No Black
Source GDJ
Seamless Green Curtain Background #1333
Green CC BY-SA 3.0A free seamless background image with abstract texture of green "curtain".
Source V. Hartikainen
Background pattern 315 (colour 6) #1840
Green CC 0The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Background pattern 202 (colour 2) #2489
Green CC 0Based on several public domain drawings on Wikimedia Commons. This was formed from a rectangular tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i
Source Firkin
Background pattern pink #1948
Pink CC 0To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Shapes pattern #2409
Brown CC 0A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin