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
More Textures
45-Degree Fabric #1
Fabric CC BY-SA 3.0Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
Prismatic Hypnotic Pattern No Background@2X #572
Noise CC 0Prismatic Hypnotic Pattern No Background
Source GDJ
Background pattern 215 #2371
Brown CC 0A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Background pattern 275 #2033
Blue CC 0Drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Lichen #1293
Stone CC 0Zero CC tileable moss or lichen covered stone texture, edited from pixabay. CC0
Source Sojan Janso
Background pattern 315 (colour 3) #1843
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
Seamless Canvas (Pale Brown) #1165
Fabric CC BY-SA 3.0A seamless canvas texture for using as background on websites. Colored in pale tones of brown.
Source V. Hartikainen
Texturetastic Gray #615
Paper CC BY-SA 3.0This ladies and gentlemen, is texturetastic! Love it.
Source Adam Pickering
Subtle Carbon@2X #950
Dark CC BY-SA 3.0There are many carbon patterns, but this one is tiny.
Source Designova
Street Art Pattern #1196
Concrete CC BY-SA 3.0Looks as if it's spray painted on the wall. You can be sure that this pattern will seamlessly fill your backgrounds on web pages.
Source V. Hartikainen
Vichy #71
Light CC BY-SA 3.0This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
Triangular ornament 32 #2435
Dark CC 0Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Flourish pattern (colour 2) #1738
Red CC 0Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Warped Stripes on Paper #1073
Paper CC BY-SA 3.0A seamless background of warped stripes on paper.
Source V. Hartikainen
Bedge Grunge@2X #979
Paper CC BY-SA 3.0A large (588x375px) sand-colored pattern for your ever-growing collection. Shrink at will.
Source Alex Tapein
Background pattern #1942
Brown CC 0Formed by distorting an image on Pixabay that was uploaded by gustavorezende. To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
HIXS Evolution@2X #610
Dark CC BY-SA 3.0Heavy depth and shadows here, but might work well on some mobile apps.
Source Damian Rivas
"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
Well #1261
Wall CC 0Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Grunge Wall@2X #82
Wall CC BY-SA 3.0Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf