A free seamless background image with abstract texture of green "curtain".
Source V. Hartikainen
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
Light honeycomb pattern made up of the classic hexagon shape.
Source Federica Pelzel
This background pattern has futuristic look. So, maybe it could be used on websites or blogs dedicated to video games?!
Source V. Hartikainen
Prismatic Abstract Geometric Background 4
Source GDJ
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
First pattern tailor-made for Retina, with many more to come. All the old ones are upscaled, in case you want to re-download.
Source Atle Mo
Prismatic Curved Diamond Pattern 8 No Background
Source GDJ
Prismatic Hexagonalism Pattern No Background
Source GDJ
ZeroCC tileable mossy (lichen) stone texture, edited from pixabay. CC0
Source Sojan Janso
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Gold Triangular Seamless Pattern No Background
Source GDJ