Zero CC tileable Crackled Cement (streaks) texture, photographed and made by me. CC0
Source Sojan Janso
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
Drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Sounds French. Some 3D square diagonals, that’s all you need to know.
Source Graphiste
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor
An abstract texture of water. It's not perfect, but will do. You may download if you like it.
Source V. Hartikainen
The classic notebook paper with horizontal stripes.
Source Are Sundnes
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Number 2 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
The following repeating website background is colored in a blue gray color and resembles a concrete wall or something similar to it.
Source V. Hartikainen
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Triangular Background Design Mark II 5
Source GDJ
Lovely pattern with splattered vintage speckles.
Source David Pomfret
Because I love dark patterns, here is Brushed Alum in a dark coating.
Source Tim Ward
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin