This was formed by distorting an image of a background on Pixabay.
Source Firkin
A nice and simple white rotated tile pattern.
Source Another One
Background Wall, Art Abstract, Blue Well & CC0 texture.
Source Ractapopulous
A free background image with a seamless texture of cardboard. This texture of cardboard looks quite realistic, especially when is actually tiled.
Source V. Hartikainen
Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
This one is amazing, truly original. Go use it!
Source Viahorizon
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
You know I love paper patterns. Here is one from Stephen. Say thank you!
Source Stephen Gilbert
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
A dark striped seamless pattern suitable for use as a background on websites.
Source V. Hartikainen
Remixed from a PNG that was uploaded to Pixabay by gingertea
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Heavy depth and shadows here, but might work well on some mobile apps.
Source Damian Rivas
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
The image depicts a seamless pattern of pine tree leaves.
Source Yamachem
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
The image depicts a seamless pattern of a Japanese family crest called "chidori" in Japanese .A chidori in Japanese means a plover in English.
Source Yamachem
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
No relation to the band, but damn it’s subtle!
Source Thomas Myrman
I scanned a paper coffee cup. You know, in case you need it.
Source Atle Mo
ZeroCC tileable stone texture, edited from pixabay. CC0
Source Sojan Janso