Stone Wall & Gray #1486
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

 More Textures
AG Square #1068
 Light  CC BY-SA 3.0

As simple as it gets: gray lines crossing.

Source Erikdel

Paper texture filter #149
 Paper  CC 0

Filter simulating the texture of heavy paper.

Source Kelan

Gold [email protected] #285
 Light  CC BY-SA 3.0

More Japanese-inspired patterns, Gold Scales this time.

Source Josh Green

Background pattern 272 (colour 3) #2055
 Red  CC 0

A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.

Source Firkin

[email protected] #668
 Dark  CC BY-SA 3.0

Your eyes can trip a bit from looking at this – use it wisely.

Source Michal Chovanec

Tactile [email protected] #6
 Dark  CC BY-SA 3.0

A heavy dark gray base, some subtle noise and a 45-degree grid makes this look like a pattern with a tactile feel to it.

Source Atle Mo

Decorative divider 236 #2090
 Dark  CC 0

From a drawing in 'The Quiver of Love', Walter Crane, 1876

Source Firkin

Grunge Wall #81
 Wall  CC BY-SA 3.0

Light gray grunge wall with a nice texture overlay.

Source Adam Anlauf

Paper Blank 2 #2116
 Paper  CC 0

CC0 textures, backgrounds.

Source SliverKnight

Mosaic tile #2481
 Brown  CC 0

From a drawing in 'Handbook of the excursions proposed to be made by the Lincoln Diocesan Architectural Society, on the 27th and 28th of May, 1857', Edward Trollope, 1857.

Source Firkin

Fabric (Plaid) #591
 Fabric  CC BY-SA 3.0

You know you can’t get enough of these linen-fabric-y patterns.

Source James Basoo

Cover Cells Book #1277
 Red  CC 0

Zero CC tileable hard cover cells book texture, 4k, scanned and made by me. CC0

Source Sojan Janso

Concretia 9 #1416
 Gray  CC 0

Gamedev - Concrete Textures. CC0 License.

Source Davit Masia

[email protected] #351
 Grid  CC BY-SA 3.0

Looks like a technical drawing board: small squares forming a nice grid.

Source We Are Pixel8

Dark Stitched Leather Background #996
 Stripes  CC BY-SA 3.0

A seamless dark leather-like background texture with diagonal lines that look like stitches.

Source V. Hartikainen

Concretia 7 #1414
 Gray  CC 0

Gamedev - Concrete Textures. CC0 License.

Source Davit Masia

Diamonds Are [email protected] #184
 Diamond  CC BY-SA 3.0

Sharp diamond pattern. A small 24x18px tile.

Source Tom Neal

Square frame 3 #2354
 Dark  CC 0

Formed in Paint.net and vectorised in Vector Magic.

Source Firkin

Banner 62 #2439
 Dark  CC 0

From a drawing in 'Lil', Evelyn Whittaker, 1893.

Source Firkin

Decorative divider 231 #2149
 Dark  CC 0

From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.

Source Firkin

Cover Pink #1284
 Pink  CC 0

Zero CC tillable hard cover red book with X shape marks. Scanned and made by me.

Source Sojan Janso

"Black Groove Stripes", Repeating Background #971
 Stripes  CC BY-SA 3.0

A repeating background for websites with a texture of black groove stripes.

Source V. Hartikainen

Stone Wall & Green #1536
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

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

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

Source Diogo Silva

Hibiscus Flowers Seamless Background #229
 Fabric  CC 0

PDP

Source GDJ

Floral background 19 (negative) #1831
 Dark  CC 0

Negative version of the original

Source Firkin

Decorative divider 201 #2421
 Dark  CC 0

From a drawing in 'Heroes of North African Discovery', Nancy Meugens, 1894.

Source Firkin

Background pattern 8 (greyscale) #210
 Dark  CC 0

Greyscale version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net

Source Firkin