This is the remix of "Tileable Wave Pattern 2" uploaded by "Arvin61r58".Thanks.I added a wire-mesh fence seamless pattern as a lower layer.
Source Yamachem
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
It’s big, it’s gradient—and it’s square.
Source Brankic1979
Paper pattern with small dust particles and 45-degree strokes.
Source Atle Mo
Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
Continuing the geometric trend, here is one more.
Source Mike Warner
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
A bit of scratched up grayness. Always good.
Source Dmitry
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
This background has abstract texture with some similarities to wood.
Source V. Hartikainen
This is the remix of "Strawberry Pattern Background" uploaded by "GDJ". Thanks. I realigned strawberries so as to get seamless and changed the BG color.
Source Yamachem
I love these crisp, tiny, super subtle patterns.
Source Badhon Ebrahim
Nothing like a clean set of bed sheets, huh?
Source Badhon Ebrahim
This was formed by distorting an image of a background on Pixabay.
Source Firkin
A free grid paper background pattern for using on web sites.
Source V. Hartikainen
Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
ZeroCC tileable mossy (lichen) stone texture, edited from pixabay. CC0
Source Sojan Janso
Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Three shades of gray makes this pattern look like a small carbon fiber surface. Great readability even for small fonts.
Source Atle Mo
A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin