Interlocking pattern 3 (colour 2) #2405
Grid 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
More Textures
Prismatic Geometric Pattern Background 2 #409
Noise CC 0Prismatic Geometric Pattern Background 2
Source GDJ
Decorative divider 238 #2088
Dark CC 0From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
Floral tile 4 #1710
Dark CC 0Derived from an image that was uploaded to Pixabay by darkmoon1968
Source Firkin
Floral divider 4 #1750
Dark CC 0From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
Background pattern 225 (colour 6) #2322
Brown CC 0Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
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
Decorative divider 245 #2079
Dark CC 0From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Black Linen #63
Dark CC BY-SA 3.0In the spirit of WWDC 2011, here is a dark iOS inspired linen pattern.
Source Atle Mo
fishnet seamless pattern #2483
Grid CC 0The image is a seamless pattern of a fishnet.
Source Yamachem
Light Mesh #707
Fabric CC BY-SA 3.0Love me some light mesh on a Monday. Sharp.
Source Wilmotte Bastien
Rough Concrete Surface #1195
Concrete CC BY-SA 3.0This one resembles a black concrete wall when is tiled. It should look great, at least with dark website themes.
Source V. Hartikainen
Decorative divider 254 #2040
Dark CC 0Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857
Source Firkin
Diamond Upholstery #767
Diamond CC BY-SA 3.0A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
Debut Dark #1014
Dark CC BY-SA 3.0Same classic 45-degree pattern, dark version.
Source Luke McDonald
Tessellation 16 (colour 6) #2210
Colorful CC 0The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
Flying swan pattern #1978
Blue CC 0Remixed from a drawing in 'Line and form', Walter Crane, 1914.
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