This was formed by distorting an image of a background on Pixabay.
Source Firkin
Abstract Ellipses Background Grayscale
Source GDJ
With a name like this, it has to be hot. Diagonal lines in light shades.
Source Isaac
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
This is a hot one. Small, sharp and unique.
Source GraphicsWall
This is the remix of an OCAL clipart called "Art Nouveau ornament" uploaded by "microcosme".Thanks.This is a seamless pattern of an Art Nouveau ornament.
Source Yamachem
Did anyone say The Hoff? This pattern is in no way related to Baywatch.
Source Josh Green
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
Derived from an image that was uploaded to Pixabay by pugmom40
Source Firkin
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
The name tells you it has curves. Oh yes, it does!
Source Peter Chon
Pattern produced in Paint.net using the Vibrato plug-in.
Source Firkin
One more sharp little tile for you. Subtle circles this time.
Source Blunia
A seamless pattern based on a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
Black & white version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Detailed but still subtle and quite original. Lovely gray shades.
Source Kim Ruddock
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
A background pattern with wavy green vertical stripes. This one has green stripes on a white background. Download if you like it.
Source V. Hartikainen
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
ZeroCC tileable mossy (lichen) stone texture, edited from pixabay. CC0
Source Sojan Janso
Bright gray tones with a hint of some metal surface.
Source Hendrik Lammers