Paper yellowish 2 #2119
 Paper  CC 0

CC0 textures, backgrounds.

Source SliverKnight

 More Textures
Pattern & Plywood #1347
 Wood  CC 0

CC0 for Free, hope you like it.

Source Yethiel

paper filer pack 2 #140
 Noise  CC 0

A set of paper filters. The base texture is generated the same way, only the compositing mode is varied.

Source Lazur URH

Background pattern 223 (colour 3) #2351
 Green  CC 0

Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.

Source Firkin

Background pattern green #2027
 Green  CC 0

Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.

Source Firkin

Fish Pattern Background #233
 Noise  CC 0

From PDP.

Source GDJ

Background pattern 308 (colour 3) #1870
 Colorful  CC 0

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

Source Firkin

Decorative divider 252 #2065
 Dark  CC 0

Remix from a drawing in 'Ostatnie chwile powstania styczniowego', Zygmunt Sulima, 1887.

Source Firkin

Background pattern 19 (black) #203
 Dark  CC 0

A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.

Source Firkin

Stripy checkerboard pattern #1768
 Dark  CC 0

Simple combination of stripy squares with their negatively coloured counterparts

Source Firkin

Micro [email protected] #8
 Carbon  CC BY-SA 3.0

Three shades of gray makes this pattern look like a small carbon fiber surface. Great readability even for small fonts.

Source Atle Mo

Prismatic Dots Background [email protected] #514
 Dark  CC 0

Prismatic Dots Background 7

Source GDJ

Decorative divider 219 #2231
 Dark  CC 0

Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.

Source Firkin

Decorative divider 290 #1817
 Dark  CC 0

From a drawing in 'Cassell's Library of English Literature', Henry Morley, 1883.

Source Firkin

Stacked [email protected] #674
 Light  CC BY-SA 3.0

A simple circle. That’s all it takes. This one is even transparent, for those who like that.

Source Saqib

Real Carbon [email protected] #287
 Carbon  CC BY-SA 3.0

Carbon fiber is never out of fashion, so here is one more style for you.

Source Alfred Lee

Seamless Core Pattern 10 #171
 Dark  CC 0

Seamless Core Pattern 10

Source GDJ

Diagonal Waves #1006
 Gray  CC BY-SA 3.0

It has waves, so make sure you don’t get sea sickness.

Source CoolPatterns

Grilled Noise #581
 Fabric  CC BY-SA 3.0

You could get a bit dizzy from this one, but it might come in handy.

Source Dertig Media

Vintage Clay Tile 3 #1460
 Unknow  CC 0

Gamedev - Roofs Textures. CC0 License.

Source Davit Masia

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

Worn Out Cardboard #1214
 Cardboard  CC BY-SA 3.0

A seamless texture of worn out "cardboard".

Source V. Hartikainen

Vintage Clay Tile 2 #1459
 Unknow  CC 0

Gamedev - Roofs Textures. CC0 License.

Source Davit Masia

Abstract Tiled Background Extended 8 #519
 Noise  CC 0

Abstract Tiled Background Extended 8

Source GDJ

Flying swan pattern #1979
 Blue  CC 0

Remixed from a drawing in 'Line and form', Walter Crane, 1914.

Source Firkin

Fabric pattern 3 #2387
 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

Retro Squares Background 9 #399
 Dark  CC 0

Retro Squares Background 9

Source GDJ

Background pattern 333 #1741
 Noise  CC 0

The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i

Source Firkin

Whitey #109
 Light  CC BY-SA 3.0

A white version of the very popular linen pattern.

Source Ant Ekşiler

Planks & Wornboards #1350
 Wood  CC 0

CC0 for Free, hope you like it.

Source Yethiel