I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
Square design drawn in Paint.net and vectorized in Vector Magic.
Source Firkin
Background pattern originally a PNG drawn in Paint.net
Source Firkin
A seamless marble-like texture colored in light blue.
Source V. Hartikainen
Zero CC asphalt, pavement, texture, photographed and made by me. CC0 WARNING I FOUND A SEAM ON THIS TEXTURE
Source Sojan Janso
With a name this awesome, how can I go wrong?
Source Nikolay Boltachev
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
A new one called white wall, not by me this time.
Source Yuji Honzawa
From a drawing in 'Hundert Jahre in Wort und Bild', S. Stefan, 1899.
Source Firkin
A nice and simple white rotated tile pattern.
Source Another One
Alternative colour scheme. Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
A seamless pattern with green and yellow diagonal lines on top of a white dotted background.
Source V. Hartikainen
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Submitted by DomainsInfo – wtf, right? But hey, a free pattern.
Source DomainsInfo
Same classic 45-degree pattern, dark version.
Source Luke McDonald
A free seamless background pattern for use on websites.
Source V. Hartikainen
From a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
This is the remix of "polka dot seamless pattern".The image depicts polka dot seamless pattern.
Source Yamachem
Fix side and a seamless pattern formed from circles.
Source SliverKnight
Background formed from the original with an emboss effect
Source GDJ
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics