CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Prismatic Curved Diamond Pattern No Background
Source GDJ
Prismatic Geometric Pattern Background 2
Source GDJ
A bit strange this one, but nice at the same time.
Source Diogo Silva
This pattern comes in orange, and it looks as if it is "made of glass".
Source V. Hartikainen
Derived from a drawing in 'Historiske Afhandlinger', Adolf Jorgensen, 1898.
Source Firkin
Embossed lines and squares with subtle highlights.
Source Alex Parker
A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A dark gray, sandy pattern with small light dots, and some angled strokes.
Source Atle Mo
Classic vertical lines, in all its subtlety.
Source Cody L
Fix and cc0 to get the tile this is based on.
Source SliverKnight
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Element of beach pattern with background.
Source Rones
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Background Wall, Art Abstract, white Well & CC0 texture.
Source Ractapopulous
From a drawing in 'Bond Slaves. The story of a struggle.', Isabella Varley, 1893.
Source Firkin
"Beige Stone", Tileable Texture.
Source V. Hartikainen
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
I’m starting to think I have a concrete wall fetish.
Source Atle Mo