Waves #1694
 Paper  CC 0

Paper-Wallpaper. CC0 License.

Source Unknow

 More Textures
[email protected] #1157
 Gray  CC BY-SA 3.0

Dare I call this a «flat pattern»? Probably not.

Source Dax Kieran

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

Decorative divider #1943
 Dark  CC 0

Inspired by a drawing in 'Poems', James Smith, 1881.

Source Firkin

White Sand #19
 Light  CC BY-SA 3.0

Same as gray sand but lighter. A sandy pattern with small light dots, and some angled strokes.

Source Atle Mo

“Transparent” Background [email protected] #494
 Light  CC 0

An emulated “transparent” background pattern, like that of all kinds of computer graphics software.

Source AdamStanislav

[email protected] #576
 Dark  CC BY-SA 3.0

Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!

Source Dertig Media

Fall Leaves #243
 Fabric  CC 0

Colored maple leaves scattered on a surface. This is tileable, so it can be used as a background or wallpaper.

Source Eady

Gradient [email protected] #694
 Grid  CC BY-SA 3.0

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

Source Brankic1979

Lined Paper #362
 Stripes  CC BY-SA 3.0

The classic notebook paper with horizontal stripes.

Source Are Sundnes

Green Subtle Web Texture #1334
 Green  CC BY-SA 3.0

A seamless green background texture. The image is distributed under a Creative Commons License (like all of the images here).

Source V. Hartikainen

Background pattern 4 #223
 Noise  CC 0

A pattern derived from repeating unit cells each derived from part of a mosaic in paint.net. The starting point for the mosaic was a picture of some prawns!

Source Firkin

Sponge A2-6 #2129
 Wall  CC 0

CC0 textures, backgrounds.

Source SliverKnight

Gray Textile Background #1168
 Fabric  CC BY-SA 3.0

A gray background pattern with a texture of textile. Suits perfectly for web design.

Source V. Hartikainen

Colorful Floral Background 3 No [email protected] #486
 Light  CC 0

Colorful Floral Background 3 No Black

Source GDJ

Beige Stripes #938
 Stripes  CC BY-SA 3.0

A repeating background of beige (or is it more vanilla yellow) textured stripes. One more background with stripes.

Source V. Hartikainen

Brick #1376
 Wall  CC 0

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

Source Linolafett

Prismatic Groovy Concentric Background 2 No [email protected] #456
 Noise  CC 0

Prismatic Groovy Concentric Background 2 No Black

Source GDJ

White [email protected] #1106
 Wall  CC BY-SA 3.0

Looks like an old wall. I guess that’s it then?

Source Viahorizon

Prismatic Dots Background [email protected] #506
 Noise  CC 0

Prismatic Dots Background 3

Source GDJ

[email protected] #658
 Paper  CC BY-SA 3.0

Nicely crafted paper pattern, although a bit on the large side (500x593px).

Source Blaq Annabiosis

[email protected] #349
 Light  CC BY-SA 3.0

White circles connecting on a light gray background.

Source Mark Collins

Paper Blank 2 #2116
 Paper  CC 0

CC0 textures, backgrounds.

Source SliverKnight

Prismatic Groovy Concentric Background [email protected] #462
 Noise  CC 0

Prismatic Groovy Concentric Background 4

Source GDJ

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

Prismatic Dots Background [email protected] #512
 Dark  CC 0

Prismatic Dots Background 6

Source GDJ

Floral background #1973
 Dark  CC 0

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

Source Firkin

Floral background 17 (colour 3) #1849
 Blue  CC 0

Remixed from a JPG that was uploaded to Pixabay by theasad121

Source Firkin