All good things come in threes, so I give you the third in my little concrete wall series.
Source Atle Mo
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
Prismatic Curved Diamond Pattern 3 No Background
Source GDJ
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Black And White Floral Pattern Background Inverse
Source GDJ
Nicely executed tiling for an interesting pattern.
Source Ignasi Àvila Padró
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
A comeback for you: the popular Escheresque, now in black.
Source Patten
ZeroCC tileable mossy (lichen) stone texture, edited from pixabay. CC0
Source Sojan Janso
Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
Background pattern originally a PNG drawn in Paint.net
Source Firkin
One more sharp little tile for you. Subtle circles this time.
Source Blunia
A seamless pattern formed from background pattern 102
Source Firkin
Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
A seamless textured paper for backgrounds. Colored in pale orange hues.
Source V. Hartikainen