The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
This is a hot one. Small, sharp and unique.
Source GraphicsWall
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
This is indeed a bit strange, but here’s to the crazy ones!
Source Christopher Buecheler
Abstract Ellipses Background Grayscale
Source GDJ
A repeating background for websites with a texture of black groove stripes.
Source V. Hartikainen
A seamless pattern recreated from an image on Pixabay. It is reminiscent of parquet flooring and is formed from a square tile, which can be recovered in Inkscape by selecting the ungrouped rectangle and using shift-alt-I together.
Source Firkin
Prismatic Curved Diamond Pattern 3 No Background
Source GDJ
A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Prismatic Groovy Concentric Background 4 No Black
Source GDJ
Based on an image that was uploaded to Pixabay by devanath
Source Firkin
The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
A free web background image with a seamless concrete-like texture and an Indian-red color.
Source V. Hartikainen
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Prismatic Groovy Concentric Background
Source GDJ
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
I guess this is inspired by the city of Ravenna in Italy and its stone walls.
Source Sentel
The image depicts a seamless pattern of a Japanese family crest called "chidori" in Japanese .A chidori in Japanese means a plover in English.
Source Yamachem