From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
Floral patterns will never go out of style, so enjoy this one.
Source Lasma
Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
From a design in 'Storia del Palazzo Vecchio in Firenze', Aurelio Gotti, 1889.
Source Firkin
Tiny, tiny 3D cubes. Reminds me of the good old pattern from k10k.
Source Etienne Rallion
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
Prismatic Curved Diamond Pattern 6 No Background
Source GDJ
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
Dark, square, clean and tidy. What more can you ask for?
Source Jaromír Kavan
Background pattern made in "Grunge-Like" style. Available in both SVG and JPG formats. Edit to your needs then click the download button.
Source V. Hartikainen
Kaleidoscope Prismatic Abstract No Background
Source GDJ
Could be paper, could be a Polaroid frame – up to you!
Source Chaos
Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz
A seamless web background with texture of aged grid paper.
Source V. Hartikainen
A yellow tiled background... Blurriness, bokeh effect and rectangles pattern in one mix.
Source V. Hartikainen
One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock
From a drawing in 'Bond Slaves. The story of a struggle.', Isabella Varley, 1893.
Source Firkin
A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin