From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
The classic subtle pattern. Sort of wall/brick looking. Or moon-looking?
Source Joel Klein
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
You guessed it – looks a bit like cloth.
Source Peax Webdesign
Geometric lines are always hot, and this pattern is no exception.
Source Listvetra
All good things come in threes, so I give you the third in my little concrete wall series.
Source Atle Mo
A seamless web texture of "green stone".
Source V. Hartikainen
Different from the original in being a simple tile stored as a pattern definition, rather than numerous repeated objects. Hence easy and quick to give this pattern to objects of different shapes. To get the tile in Inkscape, select the rectangle and use shift+alt+i.
Source Firkin
This is a remix of "blue wave-seigaiha".I hope this subtle color version of Seigaiha would be suitable for background .
Source Yamachem
Number 4 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Not the most creative name, but it’s a good all-purpose light background.
Source Dmitry
A seamless background pattern with a texture of wood planks. This wood background pattern has vertically arranged planks. You may try to rotate it 90°, to see how it will look like when the wood planks are arranged horizontally.
Source V. Hartikainen
Formed by heavily distorting part of a an image of a fish uploaded to Pixabay by GLady
Source Firkin
This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor
From a drawing in 'Two Women in the Klondike', Mary Hitchcock, 1899.
Source Firkin
A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
Tweed is back in style – you heard it here first. Also, the @2X version here is great!
Source Simon Leo
Prismatic Curved Diamond Pattern No Background
Source GDJ