"Beige Stone", Seamless Web Texture #1031
 Stone  CC BY-SA 3.0

It looks like a polished stone surface to me. Download it for free, as always.

Source V. Hartikainen

 More Textures
Retro Squares Background 5 #395
 Dark  CC 0

Retro Squares Background 5

Source GDJ

Square ornament 38 #2147
 Dark  CC 0

From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.

Source Firkin

Wood #49
 Wood  CC BY-SA 3.0

Dark wooden pattern, given the subtle treatment. based on texture from Cloaks.

Source Atle Mo
Based from Cloaks

Green & Ivy #1365
 Green  CC 0

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

Source Linolafett

Confectionary #1342
 Light  CC BY-SA 3.0

This could be a hippy vintage wallpaper.

Source Tileable Patterns

Wall #1246
 Wall  CC 0

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

Source Sojan Janso

Sixties background #1919
 Colorful  CC 0

Fix side and a seamless starry tile.

Source SliverKnight

Background pattern black and white #2030
 Dark  CC 0

A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.

Source Firkin

Sponge A2-2 #2125
 Yellow  CC 0

CC0 textures, backgrounds.

Source SliverKnight

Clean [email protected] #738
 Fabric  CC BY-SA 3.0

A nice light textile pattern for your kit.

Source N8rx

geometrical pattern 01 remix #2456
 Wall  CC 0

This is a remix of "geometrical pattern 01".

Source Yamachem

Background pattern 306 (colour 2) #1881
 Colorful  CC 0

Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.

Source Firkin

Background pattern 248 (colour) #2180
 Yellow  CC 0

To get the tile this is made up from select the rectangle in Inkscape and use shift+alt+i.

Source Firkin

Dark Matter #601
 Dark  CC BY-SA 3.0

The name is totally random, but hey, it sounds good.

Source Atle Mo

Cross Scratches #625
 Paper  CC BY-SA 3.0

Subtle scratches on a light gray background.

Source Andrey Ovcharov

Wood Pattern #370
 Wood  CC BY-SA 3.0

One of the few full-color patterns here, but this one was just too good to pass up.

Source Alexey Usoltsev

Wavy Green Vertical Stripes #936
 Stripes  CC BY-SA 3.0

A background pattern with wavy green vertical stripes. This one has green stripes on a white background. Download if you like it.

Source V. Hartikainen

[email protected] #928
 Dark  CC BY-SA 3.0

A very dark asfalt pattern based off of a photo taken with my iPhone.

Source Atle Mo

Patchwork Quilt Pattern Background #228
 Noise  CC 0

PDP

Source GDJ

Hexellence #705
 Light  CC BY-SA 3.0

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

Source Kim Ruddock

Prismatic Geometric Pattern Background No [email protected] #786
 Noise  CC 0

Prismatic Geometric Pattern Background No Black

Source GDJ

Zig [email protected] #329
 Dark  CC BY-SA 3.0

So tiny, just 7 by 7 pixels – but still so sexy. Ah yes.

Source Dmitriy Prodchenko

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

Seamless Prismatic Quadrilateral Line Art Pattern No Background #379
 Diamond  CC 0

Seamless Prismatic Quadrilateral Line Art Pattern No Background

Source GDJ

Tex2res3 #723
 Fabric  CC BY-SA 3.0

Number 4 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.

Source Janos Koos

Black [email protected] #600
 Dark  CC BY-SA 3.0

Geometric lines are always hot, and this pattern is no exception.

Source Listvetra

Ancient Pattern #1058
 Stone  CC BY-SA 3.0

A repeating graphic with ancient pattern. I came up with this name/title at last minute, so you may find that there is very little of ancientness in this pattern after all.

Source V. Hartikainen

Background pattern 220 #2360
 Dark  CC 0

A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Derived from a design in 'Storia del Palazzo Vecchio in Firenze', Aurelio Gotti, 1889.

Source Firkin

[email protected] #954
 Dark  CC BY-SA 3.0

Hexagonal dark 3D pattern. What more can you ask for?

Source Norbert Levajsics