The name tells you it has curves. Oh yes, it does!
Source Peter Chon
There are quite a few grid patterns, but this one is a super tiny grid with some dust for good measure.
Source Dominik Kiss
A seamless texture of an abstract wall colored in shades of light orange brown.
Source V. Hartikainen
Prismatic Polyskelion Pattern No Background
Source GDJ
Background Wall, Art Abstract, Blue Well & CC0 texture.
Source Ractapopulous
A free background tile with a pattern of pink bump dots. This background tile is sweet! Moreover, it's designed for use as website backgrounds.
Source V. Hartikainen
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
A seamless web background with texture of aged grid paper.
Source V. Hartikainen
A seamless pattern the starting point for which was a 'colour modulo' texture in Paint.net.
Source Firkin
Not the most creative name, but it’s a good all-purpose light background.
Source Dmitry
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A brown seamless wood texture in a form of stripe pattern. The result has turned out pretty well, in my opinion.
Source V. Hartikainen
Neat little photography icon pattern.
Source Hossam Elbialy