Checkered [email protected] #323
 Grid  CC BY-SA 3.0

Simple gray checkered lines, in light tones.

Source Radosław Rzepecki

 More Textures
Ground Cracked 2 #1280
 Wall  CC 0

Zero CC tileable ground (#2) cracked, crackled texture, made by me. CC0

Source Sojan Janso

Background pattern 250 (colour) #2171
 Yellow  CC 0

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

Source Firkin

Dungeons & Flagons 6 #1422
 Diamond  CC 0

Gamedev - Floors Textures. CC0 License.

Source Davit Masia

Soft [email protected] #319
 Dark  CC BY-SA 3.0

Pattern #100! A black classic knit-looking pattern.

Source Factorio.us Collective

[email protected] #716
 Light  CC BY-SA 3.0

One more in the line of patterns inspired by Japanese/Asian styles. Smooth.

Source Kim Ruddock

Smooth Dark Wall #1266
 Wall  CC 0

Zero CC plastic pattern texture, photographed and made by me. CC0 *Note, this texture was on the perfectly smooth surface of a plastic shovel scraper, not sure how to call it. Plz coment if you know what its called.

Source Sojan Janso

Three Arrows #1668
 Paper  CC 0

Paper-Wallpaper. CC0 License.

Source Unknow

Fabric [email protected] #10
 Light  CC BY-SA 3.0

Semi-light fabric pattern made out of random pixels in shades of gray.

Source Atle Mo

Dirty #1372
 Green  CC 0

Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!

Source Linolafett

Background pattern 255 #2142
 Dark  CC 0

Colour version of the original pattern.

Source Firkin

Tree Bark #1182
 Light  CC BY-SA 3.0

This one is something special. I’d call it a flat pattern, too. Very well done, sir!

Source GetDiscount

Dirty Old Black Shirt #853
 Dark  CC BY-SA 3.0

Used in small doses, this could be a nice subtle pattern. Used on a large surface, it’s dirty!

Source Paul Reulat

White Linen #839
 Light  CC BY-SA 3.0

Dead simple but beautiful horizontal line pattern.

Source Fabian Schultz

Always Grey #53
 Dark  CC BY-SA 3.0

Crossing lines with a subtle emboss effect on a dark background.

Source Stefan Aleksić

Black Metallic Pattern #1090
 Metal  CC BY-SA 3.0

A free black metallic background pattern. Here's a new pattern I made that looks metallic.

Source V. Hartikainen

Floral #1676
 Paper  CC 0

Paper-Wallpaper. CC0 License.

Source Unknow

Background pattern [email protected] #564
 Dark  CC 0

A seamless pattern formed from background pattern 102

Source Firkin

Gold Scale #284
 Light  CC BY-SA 3.0

More Japanese-inspired patterns, Gold Scales this time.

Source Josh Green

Floors & Black #1608
 Wall  CC 0

Floors-Tiles. CC0 License.

Source Unknow

"Wide Stripe Wallpaper", Seamless Pattern #1227
 Yellow  CC BY-SA 3.0

A seamless pattern with wide vertical stripes colored in pale yellow.

Source V. Hartikainen

Inspiration Geometry #1175
 Unknow  CC BY-SA 3.0

This one is rather fun and playful. The 2X could be used at 1X too!

Source Welsley

Repeating Vintage Paper Background #1077
 Paper  CC BY-SA 3.0

A repeating background of beige paper with vintage look. Repeats to infinity, as usual.

Source V. Hartikainen

Retro Circles Background 4 No Black #422
 Dark  CC 0

Retro Circles Background 4 No Black

Source GDJ

Bark #1379
 Wall  CC 0

Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!

Source Linolafett

Decorative divider 243 #2082
 Dark  CC 0

From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.

Source Firkin

Halftone #1310
 Light  CC BY-SA 3.0

Halftone, not halfling. Got it?

Source Atle Mo

[email protected] #706
 Light  CC BY-SA 3.0

Detailed but still subtle and quite original. Lovely gray shades.

Source Kim Ruddock

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