Background pattern 272 (colour 3) #2055
Red CC 0A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
More Textures
polka dot seamless pattern #2531
Light CC 0The image depicts polka dot seamless pattern.
Source Yamachem
Diagonal Striped Brick@2X #680
Stripes CC BY-SA 3.0Might not be super subtle, but quite original in its form.
Source Alex Smith
Gnarly bark #2582
Wood CC 0A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
"Green Stone", Seamless Web Texture #1050
Stone CC BY-SA 3.0A seamless web texture of "green stone".
Source V. Hartikainen
Triangular #1156
Gray CC BY-SA 3.0Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
Prismatic Curved Diamond Pattern 2 No Background #538
Diamond CC 0Prismatic Curved Diamond Pattern 2 No Background
Source GDJ
Prismatic Geometric Tessellation Pattern 3 No Background #555
Noise CC 0Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ
Soft Kill #318
Dark CC BY-SA 3.0Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
Gray Sand@2X #18
Dark CC BY-SA 3.0A dark gray, sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
White Well & Star #1700
Wall CC 0Background Wall, Art Abstract, Star Well & CC0 texture.
Source Ractapopulous
Silver Scales@2X #190
Light CC BY-SA 3.0Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Decorative divider 274 #1922
Dark CC 0Redrawn based on a drawing in 'По Сѣверо-Западу Россіи' Konstantin Sluchevsky, 1897.
Source Firkin
Stripy checkerboard pattern 2 #1767
Dark CC 0Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
Prismatic Abstract Background Design No Black #404
Noise CC 0Prismatic Abstract Background Design No Black
Source GDJ
Abstract Tiled Background Extended 12 #523
Noise CC 0Abstract Tiled Background Extended 12
Source GDJ
Floral design 91 #1814
Dark CC 0From a drawing in 'Hubert Montreuil, or the Huguenot and the Dragoon', Francisca Ouvry, 1873.
Source Firkin
Pineapple Cut #583
Diamond CC BY-SA 3.0I love the movie Pineapple Express, and I’m also liking this Pineapple right here.
Source Audee Mirza
Felt #300
Wall CC BY-SA 3.0Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo
"Dark Wood", Free Web Background #872
Wood CC BY-SA 3.0Feel free to download this "Dark Wood" background texture for your web site. The background tiles seamlessly!
Source V. Hartikainen
Prismatic Abstract Geometric Background 2 #268
Noise CC 0Prismatic Abstract Geometric Background 2
Source GDJ
Kaleidoscope Prismatic Abstract No Background #387
Noise CC 0Kaleidoscope Prismatic Abstract No Background
Source GDJ
lotus crane #2499
Concrete CC 0The image depicts a seamless pattern of the design which includes a stylized lotus and a stylized crane.I referred to the original image in a book which is into public domain.
Source Yamachem
Straws #972
Light CC BY-SA 3.0Super detailed 16×16 tile that forms a beautiful pattern of straws.
Source Pavel