From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
This light background pattern has a texture of "frozen" surface with diagonal stripes. Here's an yet another addition to the collection of free website backgrounds.
Source V. Hartikainen
Remixed from a drawing in 'A Girl in Ten Thousand', Elizabeth Meade, 1896.
Source Firkin
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
Colour version of the original seamless pattern.
Source Firkin
From a drawing in 'Storia del Palazzo Vecchio in Firenze', Aurelio Gotti, 1889.
Source Firkin
The name is totally random, but hey, it sounds good.
Source Atle Mo
Inspired by a drawing in 'Kulturgeschichte', Freidrich Hellwald, 1896.
Source Firkin
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Bit of a strange name on this one, but still nice. Tiny gray square things.
Source Carlos Valdez
This one is amazing, truly original. Go use it!
Source Viahorizon
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
Tiny circle waves, almost like the ocean.
Source Sagive
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
Inspired by an image that was uploaded to Pixabay by geralt
Source Firkin
One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Neat little photography icon pattern.
Source Hossam Elbialy
Paper model of a tetrahedron. Modelo de papel de um tetraedro.
Source laobc
Love me some light mesh on a Monday. Sharp.
Source Wilmotte Bastien
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin