Prismatic Abstract Geometric Background 4 No Black #441
 Dark  CC 0

Prismatic Abstract Geometric Background 4 No Black

Source GDJ

 More Textures
Mix Stone #1298
 Stone  CC 0

ZeroCC tileable stone texture, edited from pixabay, CC0

Source Sojan Janso

Prismatic Arrows [email protected] #802
 Noise  CC 0

Prismatic Arrows Background

Source GDJ

Mermaid divider #1970
 Dark  CC 0

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

Source Firkin

Dark Wall #817
 Dark  CC BY-SA 3.0

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

Source Atle Mo

Brown Metallic Grid Pattern #1086
 Metal  CC BY-SA 3.0

A brown metallic grid pattern layered on top of a dark fabric texture. It should look great when using as a tiled background on web pages, especially blogs.

Source V. Hartikainen

Simple bump #172
 Dark  CC 0

A simple bump filter made upon request at irc #inkscape at freenode. Made a screen capture of the making here: https://youtu.be/TGAWYKVLxQw

Source Lazur URH

Lined Paper #1034
 Light  CC BY-SA 3.0

I know there is one here already, but this is sexy!

Source Gjermund Gustavsen

Concretia 3 #1410
 Gray  CC 0

Gamedev - Concrete Textures. CC0 License.

Source Davit Masia

Decorative divider 240 #2086
 Dark  CC 0

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

Source Firkin

Background pattern 8 (black) #209
 Dark  CC 0

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

Source Firkin

Stone Wall & Green #1536
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Stone Wall & Red #1577
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Gradient Squares #693
 Grid  CC BY-SA 3.0

It’s big, it’s gradient—and it’s square.

Source Brankic1979

Sponge A2-4 #2127
 Wall  CC 0

CC0 textures, backgrounds.

Source SliverKnight

Geometric pattern #2005
 Grid  CC 0

A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i

Source Firkin

Old Wall #346
 Wall  CC BY-SA 3.0

Old concrete wall in light shades.

Source Bartosz Kaszubowski

Decorative divider 239 #2087
 Dark  CC 0

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

Source Firkin

Colorful Stripes [email protected] #794
 Noise  CC 0

Colorful Stripes Background

Source GDJ

Background pattern 314 (colour 4) #1836
 Blue  CC 0

The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i

Source Firkin

Background pattern 251 (colour 3) #2165
 Blue  CC 0

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

Source Firkin

Dark Brick Pattern #1032
 Stone  CC BY-SA 3.0

A seamless pattern of dark bricks. Maybe it's not very realistic, but it looks good in my opinion.

Source V. Hartikainen

Bright Squares #87
 Light  CC BY-SA 3.0

It’s okay to be square! A nice light gray pattern with random squares.

Source Waseem Dahman

Batik #1671
 Paper  CC 0

Paper-Wallpaper. CC0 License.

Source Unknow

"Green Rhombuses", Seamless Background Pattern #1336
 Green  CC BY-SA 3.0

A free green background pattern with a pattern of rhombuses on a seamless texture. Feel free to use it as a tiled background image on your web site.

Source V. Hartikainen

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

Prismatic Dots Background #501
 Noise  CC 0

Prismatic Dots Background

Source GDJ

Tile-able Black Paper Background #1076
 Paper  CC BY-SA 3.0

A black tile-able background with paper-like texture.

Source V. Hartikainen

edo pattern-samekomon #2271
 Dark  CC 0

The image depicts an edo-era pattern called "same-komon" or "鮫小紋"which looks like a shark skin.The "same" in Japanese means shark in English.

Source Yamachem

Outlets #671
 Dark  CC BY-SA 3.0

Just 4x8px, but still so stylish!

Source Michal Chovanec