From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
A background pattern with blue on white vertical stripes.
Source V. Hartikainen
Number 3 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Remixed from a drawing that was uploaded to Pixabay by ractapopulous
Source Firkin
A new take on the black linen pattern. Softer this time.
Source Atle Mo
White fabric looking texture with some nice random wave features.
Source Hendrik Lammers
A seamless web background with texture of aged grid paper.
Source V. Hartikainen
Little x’es, noise and all the stuff you like. Dark like a Monday, with a hint of blue.
Source Tom McArdle
Background Wall, Art Abstract, Blue Well & CC0 texture.
Source Ractapopulous
A very dark asfalt pattern based off of a photo taken with my iPhone.
Source Atle Mo
If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
An abstract texture of water. It's not perfect, but will do. You may download if you like it.
Source V. Hartikainen
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A comeback for you: the popular Escheresque, now in black.
Source Patten
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
Sharp diamond pattern. A small 24x18px tile.
Source Tom Neal
This one is amazing, truly original. Go use it!
Source Viahorizon
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A seamless light gray paper texture with horizontal double lines.
Source V. Hartikainen
Tweed is back in style – you heard it here first. Also, the @2X version here is great!
Source Simon Leo