From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
From a drawing in 'Hyde Park from Domesday-Book to date', John Ashton, 1896.
Source Firkin
Gold Triangular Seamless Pattern No Background
Source GDJ
From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
Abstract Stars Geometric Pattern Prismatic No Background
Source GDJ
Stefan is hard at work, this time with a funky pattern of squares.
Source Stefan Aleksić
One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
A seamless pattern based on a rectangular tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i
Source Firkin
An aged paper background tile with smeared and pressed text.
Source V. Hartikainen
I’m starting to think I have a concrete wall fetish.
Source Atle Mo
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
Scanned some rice paper and tiled it up for you. Enjoy.
Source Atle Mo
This was submitted in a beige color, hence the name. Now it’s a gray paper pattern.
Source Konstantin Ivanov
Prismatic Curved Diamond Pattern 2 No Background
Source GDJ
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
Pixel by pixel, sharp and clean. Very light pattern with clear lines.
Source M.Ashok
Zero CC tillable hard cover red book with X shape marks. Scanned and made by me.
Source Sojan Janso
The image depicts meshed silhouettes of various things.The original image is an OCAL clipart called "Enter FOSSASIA 2016 #IoT T-shirt Design Contest" uploaded by "openclipart".Thanks.
Source Yamachem
Coming in at 666x666px, this is an evil big pattern, but nice and soft at the same time.
Source Atle Mo