Seamless Green Curtain Background #1333
Green CC BY-SA 3.0A free seamless background image with abstract texture of green "curtain".
Source V. Hartikainen
More Textures
Abstract Tiled Background Extended 6 #517
Noise CC 0Abstract Tiled Background Extended 6
Source GDJ
Background pattern 245 (colour 3) #2190
Blue CC 0This was formed by distorting an image of a background on Pixabay.
Source Firkin
Seamless Texture of Wood Planks #880
Wood CC BY-SA 3.0Here's an yet another background for websites, with a seamless texture of wood planks this time.
Source V. Hartikainen
Noisy #45
Paper CC BY-SA 3.0Looks a bit like concrete with subtle specks spread around the pattern.
Source Mladjan Antic
Floral design 97 #1778
Yellow CC 0From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Moss #1290
Wall CC 0ZeroCC tileable moss texture, photographed and made by me. CC0
Source Sojan Janso
Floral background 11 #2044
Dark CC 0Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
Layered wood #2566
Wood CC 0A seamless texture traced from an image on opengameart.org shared by Scouser.
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
Subtle Carbon #949
Dark CC BY-SA 3.0There are many carbon patterns, but this one is tiny.
Source Designova
Dark Stripes@2X #40
Dark CC BY-SA 3.0Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
Geometric pattern #2005
Grid CC 0A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
Decorative divider 254 #2040
Dark CC 0Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857
Source Firkin
Background pattern 259 (colour 3) #2130
Colorful CC 0Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Wavy background #2015
Green CC 0A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Weave #733
Wall CC BY-SA 3.0Medium gray pattern with small strokes to give a weave effect.
Source Catherine
Background pattern #1941
Brown CC 0Formed by heavily distorting part of a an image of a fish uploaded to Pixabay by GLady
Source Firkin
Background pattern 259 (colour 4) #2131
Green CC 0Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
"Black Chains", Gloomy Background #1082
Metal CC BY-SA 3.0A repeating gloomy background image. This one consists of a pattern of black chains layered on top of a dark textured background.
Source V. Hartikainen
Prismatic Geometric Tessellation Pattern 2 No Background #553
Noise CC 0Prismatic Geometric Tessellation Pattern 2 No Background
Source GDJ
Background pattern 298 #1899
Dark CC 0To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Gold Scale #284
Light CC BY-SA 3.0More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
Rocky Wall@2X #42
Light CC BY-SA 3.0High detail stone wall with minor cracks and specks.
Source Projecteightyfive