Stone Wall & Black #1524
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

 More Textures
Prismatic Snowflakes Pattern 2 No [email protected] #782
 Light  CC 0

Prismatic Snowflakes Pattern 2 No Background

Source GDJ

Dungeons & Flagons 8 #1424
 Diamond  CC 0

Gamedev - Floors Textures. CC0 License.

Source Davit Masia

Vintage pattern #1959
 Grid  CC 0

Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.

Source Firkin

Plain & Pine Green #1359
 Wood  CC 0

CC0 for Free, hope you like it.

Source Yethiel

Background pattern 215 (colour 4) #2368
 Green  CC 0

A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.

Source Firkin

Wall #1244
 Wall  CC 0

Zerro CC tillable texture of stones photographed and made by me. CC0

Source Sojan Janso

Decorative divider 283 #1856
 Dark  CC 0

From a drawing in 'In an Enchanted Island', William Mallock, 1892.

Source Firkin

Dark Blue Gray Wallpaper Texture #901
 Stripes  CC BY-SA 3.0

This seamless background image should look nice on websites. It has a dark blue gray texture with vertical stripes, it tiles seamlessly and, like all of the background images here, it's free. So, if you like it, take it!

Source V. Hartikainen

Colorful Paw Prints Pattern Background #260
 Noise  CC 0

pixabay.

Source GDJ

Floors & Block #1600
 Wall  CC 0

Floors-Tiles. CC0 License.

Source Unknow

Strange Bullseyes #865
 Light  CC BY-SA 3.0

This is indeed a bit strange, but here’s to the crazy ones!

Source Christopher Buecheler

Stone Wall & Gray #1583
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Redox 01 #849
 Light  CC BY-SA 3.0

Bright gray tones with a hint of some metal surface.

Source Hendrik Lammers

Dark Fish Skin #1048
 Dark  CC BY-SA 3.0

It almost looks a bit blurry, but then again, so are fishes.

Source Petr Šulc

Decorative divider 220 #2230
 Dark  CC 0

Prepared mostly as a raster in Paint.net and vectorised.

Source Firkin

Bright Multicolored Floral Background #559
 Noise  CC 0

Bright Multicolored Floral Background by Karen Arnold from PDP.

Source GDJ

Pewter #1638
 Metal  CC 0

Metal-Plain or Painted. CC0 License.

Source Unknow

Deevad Torchon #1667
 Paper  CC 0

Paper. CC0 License.

Source Unknow

Crisp Paper [email protected] #842
 Light  CC BY-SA 3.0

Sort of reminds me of those old house wallpapers.

Source Tish

Prismatic Floral [email protected] #474
 Dark  CC 0

Prismatic Floral Background

Source GDJ

Background pattern 214 (colour 4) #2373
 Yellow  CC 0

A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Alternative colour scheme.

Source Firkin

Prismatic Dots Background #501
 Noise  CC 0

Prismatic Dots Background

Source GDJ

Elegant Grid #316
 Wall  CC BY-SA 3.0

This is a hot one. Small, sharp and unique.

Source GraphicsWall

Shapes pattern 2 #2241
 Red  CC 0

A background made up of shapes.

Source Firkin

Egg Shell #861
 Light  CC BY-SA 3.0

It’s an egg, in the form of a pattern. This really is 2012.

Source Paul Phönixweiß

Block Well #1697
 Colorful  CC 0

Background Wall, Art Abstract, Block Well & CC0 texture.

Source Ractapopulous

Redox [email protected] #850
 Light  CC BY-SA 3.0

Bright gray tones with a hint of some metal surface.

Source Hendrik Lammers

Decorative divider 300 #1715
 Dark  CC 0

Derived from a PNG that was uploaded to Pixabay by nutkitten

Source Firkin

Vintage pattern #1958
 Grid  CC 0

Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.

Source Firkin