A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Polka Dots 3 No Background
Source GDJ
A seamless pattern made from the gold Penrose triangle by GDJ and the two remixes
Source Firkin
The original enhanced with some gradients.
Source Firkin
Number 1 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
A white version of the very popular linen pattern.
Source Ant Ekşiler
I have no idea what J Boo means by this name, but hey – it’s hot.
Source j Boo
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
You know you love wood patterns, so here’s one more.
Source Richard Tabor
Seamless Green Tile Background
Source V. Hartikainen
Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Prismatic Groovy Concentric Background 4 No Black
Source GDJ