The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
An abstract Background pattern of purple twisty patterns.
Source TikiGiki
ZeroCC tileable stone texture, edited from pixabay. CC0
Source Sojan Janso
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Classic vertical lines, in all its subtlety.
Source Cody L
A version without colours blended together to give a different look.
Source Firkin
Prismatic Hexagonalist Pattern No Background
Source GDJ
A comeback for you: the popular Escheresque, now in black.
Source Patten
Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
The image depicts a seamless pattern made using a bird's face.
Source Yamachem
A seamless pattern of "sewn stripes" colored in light gray.
Source V. Hartikainen
So tiny, just 7 by 7 pixels – but still so sexy. Ah yes.
Source Dmitriy Prodchenko
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
A repeating background with seamless texture of stone. There haven't been any stone-like backgrounds for a while, so I have decided to create one more. The rest can be found in the appropriate category.
Source V. Hartikainen