Abstract Ellipses Background Grayscale #378
 Dark  CC 0

Abstract Ellipses Background Grayscale

Source GDJ

 More Textures
Wall #1243
 Wall  CC 0

Zerro CC tillable texture of stones photographed and made by me. CC0

Source Sojan Janso

Zig-zag pattern 2 #2417
 Grid  CC 0

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

Multiple Greek key frame #1733
 Dark  CC 0

Inspired by a drawing seen in 'City of Liverpool', James Picton, 1883.

Source Firkin

[email protected] #736
 Light  CC BY-SA 3.0

A playful triangle pattern with different shades of gray.

Source Dimitrie Hoekstra

Plain & Wood #1356
 Wood  CC 0

CC0 for Free, hope you like it.

Source Yethiel

Little [email protected] #688
 Light  CC BY-SA 3.0

The basic shapes never get old. Simple triangle pattern.

Source Atle Mo

Cube & Dark #1626
 Dark  CC 0

Manmade & Civilisation-Tech-Lights. CC0 License.

Source Unknow

Leafy pattern 11 (colour) #1763
 Green  CC 0

From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.

Source Firkin

Colourful bricks pattern (no background) #265
 Noise  CC 0

Original minus the background

Source Firkin

Background pattern 213 (colour) #2411
 Colorful  CC 0

A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I. A version of the original with random colors.

Source Firkin

Grey [email protected] #642
 Paper  CC BY-SA 3.0

A bit strange this one, but nice at the same time.

Source Diogo Silva

Prismatic Hexagonalism Pattern No Background #391
 Light  CC 0

Prismatic Hexagonalism Pattern No Background

Source GDJ

Dungeons & Flagons 8 #1424
 Diamond  CC 0

Gamedev - Floors Textures. CC0 License.

Source Davit Masia

Prismatic Floral Background #473
 Dark  CC 0

Prismatic Floral Background

Source GDJ

Vintage pattern #2296
 Brown  CC 0

Inspired by a pattern seen on a public domain image of a very old tile. To get the unit cell, select the rectangle in Inkscape and use shift+alt+i.

Source Firkin

Ocean decorative divider #1904
 Dark  CC 0

Vector version of a png that was uploaded to Pixabay by pencilparker

Source Firkin

Concretia 1 #1408
 Gray  CC 0

Gamedev - Concrete Textures. CC0 License.

Source Davit Masia

Mix & Black Pattern #1634
 Metal  CC 0

Metal-Plain or Painted. CC0 License.

Source Unknow

Subtle [email protected] #950
 Dark  CC BY-SA 3.0

There are many carbon patterns, but this one is tiny.

Source Designova

Fabric pattern 3 (colour 6) #2382
 Fabric  CC 0

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

Blue on White Background Pattern #993
 Stripes  CC BY-SA 3.0

A background pattern with blue on white vertical stripes.

Source V. Hartikainen

Grunge For Surfaces 3 #1400
 Dark  CC 0

Gamedev - Metal Textures. CC0 License.

Source Davit Masia

Subtle [email protected] #926
 Light  CC BY-SA 3.0

Super subtle indeed, a medium gray pattern with tiny dots in a grid.

Source Designova

Decorative divider 206 #2380
 Dark  CC 0

Derived from a corner decoration itself found as a jpg on Pixabay.

Source Firkin

Decorative divider #2001
 Dark  CC 0

From a drawing in 'La Principauté de Liège et les Pays-Bas au XVIe siècle', Société des Bibliophiles Liégeois ,1887.

Source Firkin

Fabric of [email protected] #1096
 Light  CC BY-SA 3.0

As far as fabric patterns goes, this is quite crisp.

Source Heliodor Jalba

"Polished Stone", Gray Background Pattern #1053
 Stone  CC BY-SA 3.0

A seamless gray background texture suitable for use on websites. To me, it has the look of stone. Feel free to modify it to meet your needs (by making it a bit lighter or darker, for example).

Source V. Hartikainen

Floors & Black #1607
 Wall  CC 0

Floors-Tiles. CC0 License.

Source Unknow

Seamless Gray Stone Background #1028
 Stone  CC BY-SA 3.0

This background image has seamless texture that resembles a surface of gray stone.

Source V. Hartikainen