A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Derived from an image that was uploaded to Pixabay by Kaz
Source Firkin
Floral patterns might not be the hottest thing right now, but you never know when you need it!
Source Lauren
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
Remixed from a drawing in 'A Girl in Ten Thousand', Elizabeth Meade, 1896.
Source Firkin
Number 4 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
A set of paper filters. The base texture is generated the same way, only the compositing mode is varied.
Source Lazur URH
Almost like little fish shells, or dragon skin.
Source Graphiste
A criss-cross pattern similar to one I saw mown into a sports field.
Source Firkin
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
A repeating background of thick textured paper. Actually, it turned out to look like something between a paper and fabric.
Source V. Hartikainen
Sharp diamond pattern. A small 24x18px tile.
Source Tom Neal
Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek
Horizontal and vertical lines on a light gray background.
Source Adam Anlauf
Have you wondered about how it feels to be buried alive? Here is the pattern for it.
Source Hendrik Lammers
Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin
Luxury pattern, looking like it came right out of Paris.
Source Daniel Beaton
The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
A seamless pattern formed from a rectangular tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
Green Web Background, Seamless tile.
Source V. Hartikainen