Dark Textile Background #1169
Fabric CC BY-SA 3.0A background tile of dark textile. Made this a long time ago and just now decided to publish it.
Source V. Hartikainen
More Textures
GPlay@2X #736
Light CC BY-SA 3.0A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
Wavy background #2022
Blue CC 0CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Background pattern green #2027
Green CC 0Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Prismatic Polka Dots Mark II No Background #530
Noise CC 0Prismatic Polka Dots Mark II No Background
Source GDJ
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
Decorative divider 233 #2145
Dark CC 0From a drawing in 'Hyde Park from Domesday-Book to date', John Ashton, 1896.
Source Firkin
blue glass design #2545
Blue CC 0The image is a design of blue glass.How about using it as background image?
Source Yamachem
"Seamless Bark", Website Background. #879
Wood CC BY-SA 3.0This background pattern contains a seamless texture of bark. It's not very realistic, but I think it looks quite nice.
Source V. Hartikainen
"Beige Wall", Tileable Background #1189
Concrete CC BY-SA 3.0This beige background pattern resembles a concrete wall with engravings or something similar to it.
Source V. Hartikainen
Subtle Carbon #949
Dark CC BY-SA 3.0There are many carbon patterns, but this one is tiny.
Source Designova
Prismatic Floral Background No Black@2X #476
Light CC 0Prismatic Floral Background No Black
Source GDJ
Decorative divider 217 #2233
Dark CC 0Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
"Polished Stone", Gray Background Pattern #1053
Stone CC BY-SA 3.0A seamless gray background texture suitable for use on websites. To me, it has the look of stone. Feel free to modify it to meet your needs (by making it a bit lighter or darker, for example).
Source V. Hartikainen
Layered wood #2566
Wood CC 0A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Eight Horns #1325
Light CC BY-SA 3.0Looks like an old rug or a computer chip.
Source Patutin Sergey
Tessellation 16 (colour 4) #2212
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
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
ecorative divider 190 #2516
Dark CC 0From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
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
Grid #974
Gray CC BY-SA 3.0There are quite a few grid patterns, but this one is a super tiny grid with some dust for good measure.
Source Dominik Kiss
Dark Wall@2X #818
Dark CC BY-SA 3.0Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
Decorative divider 211 #2362
Dark CC 0From a drawing in 'Storia del Palazzo Vecchio in Firenze', Aurelio Gotti, 1889.
Source Firkin
Lorem Ipsum Background #1071
Paper CC BY-SA 3.0An aged paper background tile with smeared and pressed text.
Source V. Hartikainen
Fabric (Plaid) #591
Fabric CC BY-SA 3.0You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
Colourful background #2011
Colorful CC 0Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Background pattern 246 (colour 2) #2185
Green CC 0This was formed by distorting an image of a background on Pixabay.
Source Firkin