Background pattern 215 (colour 2) #2370
Blue CC 0A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
More Textures
Background pattern 112 #263
Fabric CC 0A seamless pattern with a unit cell drawn as a bitmap in Paint.net and vectorized in Vector Magic.
Source Firkin
Abstract Tiled Background Extended 10 #521
Noise CC 0Abstract Tiled Background Extended 10
Source GDJ
Prismatic Snowflakes Pattern 3 No Background #413
Light CC 0Prismatic Snowflakes Pattern 3 No Background
Source GDJ
Fence 6 #2575
Wood CC 0A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Decorative divider 213 #2336
Dark CC 0Inspired by a drawing in 'Kulturgeschichte', Freidrich Hellwald, 1896.
Source Firkin
Tasky #667
Dark CC BY-SA 3.0Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
Smooth Wall@2X #28
Light CC BY-SA 3.0Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
blue wave-seigaiha #2535
Blue CC 0The image depicts the Japanese Edo pattern called "seigaiha" or "青海波" meaning "blue -sea- wave".I hope it's suitable for the summer season.
Source Yamachem
Pinstriped Suit #665
Dark CC BY-SA 3.0Just like your old suit, all striped and smooth.
Source Alex Berkowitz
Page ornament #1992
Dark CC 0Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Prismatic Polka Dots Mark II 2 No Background #532
Noise CC 0Prismatic Polka Dots Mark II 2 No Background
Source GDJ
Leafy pattern 11 (colour) #1763
Green CC 0From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Decorative divider 251 #2069
Dark CC 0Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Background pattern black #2026
Dark 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
Page ornament 53 #2060
Dark CC 0Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
Background pattern 231 #2301
Dark CC 0A seamless pattern based on a tile that can be achieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Through Pixel Dream #1228
Yellow CC BY-SA 3.0A yellow tiled background... Blurriness, bokeh effect and rectangles pattern in one mix.
Source V. Hartikainen
Contemporary China 2 #1338
Light CC BY-SA 3.0Old China with a modern twist, take two.
Source Adam Charlts
Background pattern 224 (colour 2) #2341
Colorful CC 0To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin