Dark Wall #817
 Dark  CC BY-SA 3.0

Just to prove my point, here is a slightly modified dark version.

Source Atle Mo

 More Textures
Mocha Grunge #1099
 Gray  CC BY-SA 3.0

You don’t see many mid-tone patterns here, but this one is nice.

Source Joel Klein

R.I.P Steve Jobs #292
 Paper  CC BY-SA 3.0

He influenced us all. “Don’t be sad because it’s over. Smile because it happened.”

Source Atle Mo

Prismatic Arrows Background 2 #393
 Light  CC 0

Prismatic Arrows Background 2

Source GDJ

Cartographer #749
 Dark  CC BY-SA 3.0

A topographic map like this has actually been requested a few times, so here you go!

Source Sam Feyaerts

French [email protected] #698
 Paper  CC BY-SA 3.0

Fabric-ish patterns are close to my heart. French Stucco to the rescue.

Source Christopher Buecheler

Background pattern 309 (colour 3) #1864
 Red  CC 0

Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.

Source Firkin

Wood #1271
 Wood  CC 0

Zero CC tileable wood texture, made by me procedurally in Neo Texture Edit.

Source Sojan Janso

Brushed Aluminum 1 #1389
 Metal  CC 0

Gamedev - Metal Textures. CC0 License.

Source Davit Masia

[email protected] #279
 Paper  CC BY-SA 3.0

A good starting point for a cardboard pattern. This would work well in a variety of colors.

Source Atle Mo

Background pattern 227 #2314
 Yellow  CC 0

A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.

Source Firkin

Star pattern 2 #1898
 Dark  CC 0

To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.

Source Firkin

Diamond pattern (colour 4) #2282
 Blue  CC 0

From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.

Source Firkin

Decorative divider 200 #2420
 Dark  CC 0

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

Source Firkin

Triangular Psychosis 2 #234
 Noise  CC 0

A colorful triangular background, variation 2.

Source GDJ

[email protected] #628
 Wall  CC BY-SA 3.0

Real snow that tiles, not easy. This is not perfect, but an attempt.

Source Atle Mo

Decorative divider 272 (colour) #1926
 Yellow  CC 0

Remixed from a drawing in 'Hungary. A guide book. By several authors', 1890.

Source Firkin

[email protected] #194
 Grid  CC BY-SA 3.0

Embossed lines and squares with subtle highlights.

Source Alex Parker

Pattern cleanup 4 #157
 Noise  CC 0

An attempt for cleaning up the original image in a few steps.

Source Lazur URH

Light [email protected] #1204
 Gray  CC BY-SA 3.0

Like the name says, light and gray, with some small dots and circles.

Source Brenda Lay

Configurable Graph Paper #141
 Stripes  CC BY-SA 3.0

Pass parameters to the URL or edit the source code variables to configure the graph paper for the division desired.

Source JayNick

Retro Squares Background 2 #416
 Noise  CC 0

Retro Squares Background 2

Source GDJ

Black Wall #1267
 Wall  CC 0

Zero CC asphalt, pavement, texture, photographed and made by me. CC0 WARNING I FOUND A SEAM ON THIS TEXTURE

Source Sojan Janso

Reticular Tissue #763
 Light  CC BY-SA 3.0

The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.

Source Anna Litvinuk

Background pattern 252 (colour 6) #2157
 Light  CC 0

Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.

Source Firkin

Decorative divider 300 #1715
 Dark  CC 0

Derived from a PNG that was uploaded to Pixabay by nutkitten

Source Firkin

Iron Grip #587
 Dark  CC BY-SA 3.0

Sounds like something from World of Warcraft. Has to be good.

Source Tony Kinard

White Carbon [email protected] #824
 Light  CC BY-SA 3.0

More carbon fiber for your collections. This time in white or semi-dark gray.

Source Badhon Ebrahim

Bright Multicolored Floral Background #559
 Noise  CC 0

Bright Multicolored Floral Background by Karen Arnold from PDP.

Source GDJ

Metal Pole Rusty & Green #1653
 Metal  CC 0

Metal-Rusty. CC0 License.

Source Unknow

Background pattern 203 (colour 2) #2485
 Green  CC 0

A seamless pattern formed from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.

Source Firkin