Dark, square, clean and tidy. What more can you ask for?
Source Jaromír Kavan
Sharp diamond pattern. A small 24x18px tile.
Source Tom Neal
Abstract Geometric Monochrome Pattern Prismatic No Background
Source GDJ
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
Paper model of a tetrahedron. Modelo de papel de um tetraedro.
Source laobc
Vector version of a JPG that was uploaded to Pixabay by theasad121
Source Firkin
Plywood Web Background background image for use in web design.
Source V. Hartikainen
From a drawing in 'Hubert Montreuil, or the Huguenot and the Dragoon', Francisca Ouvry, 1873.
Source Firkin
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
Original minus the background
Source Firkin
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
Black & white version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
The image depicts a seamless pattern of a Japanese family crest called "chidori" in Japanese .A chidori in Japanese means a plover in English.
Source Yamachem
Could be paper, could be a Polaroid frame – up to you!
Source Chaos
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
So tiny, just 7 by 7 pixels – but still so sexy. Ah yes.
Source Dmitriy Prodchenko
Tiny little fibers making a soft and sweet look.
Source Badhon Ebrahim
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
A free tileable background colored in off-white (antique white) color.
Source V. Hartikainen
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Heavy depth and shadows here, but might work well on some mobile apps.
Source Damian Rivas
Love the style on this one, very fresh. Diagonal diamond pattern. Get it?
Source INS
Feel free to use this seamless background texture as a background on a web site. It's colored in a light pink color and is seamlessly tile-able.
Source V. Hartikainen
A seamless pattern of dark bricks. Maybe it's not very realistic, but it looks good in my opinion.
Source V. Hartikainen
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin