CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Geometric triangles seem to be quite hot these days.
Source Pixeden
I’m guessing this is related to the Sony Vaio? It’s a nice pattern no matter where it’s from.
Source Zigzain
A floral background formed from numerous clones of flower 117.
Source Firkin
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Seamless Prismatic Quadrilateral Line Art Pattern No Background
Source GDJ
A new one called white wall, not by me this time.
Source Yuji Honzawa
Love the style on this one, very fresh. Diagonal diamond pattern. Get it?
Source INS
Remixed from an image on Pixabay, the original having been uploaded by darkmoon1968.
Source Firkin
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
Inspired by a drawing seen in 'City of Liverpool', James Picton, 1883.
Source Firkin