Fabric 1@2X #10
Light CC BY-SA 3.0Semi-light fabric pattern made out of random pixels in shades of gray.
Source Atle Mo
More Textures
Gray Lines #913
Light CC BY-SA 3.0Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
Tessellation 15 #2223
Dark CC 0The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Prismatic Abstract Background Design #403
Noise CC 0Prismatic Abstract Background Design
Source GDJ
Soft Kill@2X #319
Dark CC BY-SA 3.0Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
Background pattern 246 (colour 4) #2183
Green CC 0This was formed by distorting an image of a background on Pixabay.
Source Firkin
crissXcross #111
Dark CC BY-SA 3.0Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
Prismatic Abstract Geometric Background 2 #268
Noise CC 0Prismatic Abstract Geometric Background 2
Source GDJ
Diminishing design 5 #1725
Blue CC 0Adapted from an image that was uploaded to Pixabay by Anerma.
Source Firkin
Light Orange Brown Wallpaper #911
Stripes CC BY-SA 3.0A free light orange brown wallpaper with vertical stripes designed for use as a tiled background on websites. An yet another background pattern with vertical stripes.
Source V. Hartikainen
Page ornament #1990
Dark CC 0Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Background pattern 201 (colour 3) #2493
Grid CC 0A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Merely Cubed #589
Grid CC BY-SA 3.0Tiny, tiny 3D cubes. Reminds me of the good old pattern from k10k.
Source Etienne Rallion
ecorative divider 190 #2516
Dark CC 0From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
Chain background #2063
Dark CC 0Remixed from a drawing in 'Canadian forest industries July-December', 1915
Source Firkin
Floral pattern 7 (colour 3) #2289
Pink CC 0Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Gray Dots Background Pattern #1127
Grid CC BY-SA 3.0A seamless background pattern with impressed gray dots.
Source V. Hartikainen
Carbon Fiber v2@2X #106
Carbon CC BY-SA 3.0One more updated pattern. Not really carbon fiber, but it’s the most popular pattern, so I’ll give you an extra choice.
Source Atle Mo
Background pattern 273 #2042
Dark CC 0Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Thick Textured Brown Paper #1070
Paper CC BY-SA 3.0A repeating background of thick textured paper. Actually, it turned out to look like something between a paper and fabric.
Source V. Hartikainen
Diamond Eyes@2X #686
Diamond CC BY-SA 3.0Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
Black Thread@2X #600
Dark CC BY-SA 3.0Geometric lines are always hot, and this pattern is no exception.
Source Listvetra