Light Blue Background Pattern #1161
 Grid  CC BY-SA 3.0

This light blue background pattern is quite pleasing to the eye, it consists of a tiny rough grid pattern, which is seamless by design. That's it, if you like the color, you can use this seamless pattern in a web design without making any further modifications to it.

Source V. Hartikainen

 More Textures
Wooden Deligh 1 #1457
 Wood  CC 0

Gamedev - Wood Textures. CC0 License.

Source Davit Masia

Prismatic Hexagonalism Pattern No [email protected] #803
 Light  CC 0

Prismatic Hexagonalism Pattern No Background

Source GDJ

Black Linen [email protected] #104
 Dark  CC BY-SA 3.0

A new take on the black linen pattern. Softer this time.

Source Atle Mo

Cross pattern #2333
 Dark  CC 0

A seamless pattern formed from cross 4. To get the original tile select the rectangle in Inkscape and use shift-alt-i.

Source Firkin

Mossy #1296
 Stone  CC 0

ZeroCC tileable mossy (lichen) stone texture, edited from pixabay. CC0

Source Sojan Janso

Wood Web Background #870
 Wood  CC BY-SA 3.0

Here's a tile-able wood background image for use in web design.

Source V. Hartikainen

Vintage Clay Tile 5 #1462
 Unknow  CC 0

Gamedev - Roofs Textures. CC0 License.

Source Davit Masia

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

Black Wall #1267
 Wall  CC 0

Zero CC asphalt, pavement, texture, photographed and made by me. CC0 WARNING I FOUND A SEAM ON THIS TEXTURE

Source Sojan Janso

Wine glass background #2054
 Pink  CC 0

Remixed from an image on Pixabay uploaded by Prawny

Source Firkin

Rough Cloth #312
 Fabric  CC BY-SA 3.0

More tactile goodness. This time in the form of some rough cloth.

Source Bartosz Kaszubowski

Background pattern 327 #1803
 Dark  CC 0

Created as a PNG in Paint.net and vectorised

Source Firkin

geometrical pattern 01 remix #2456
 Wall  CC 0

This is a remix of "geometrical pattern 01".

Source Yamachem

Concretia 5 #1412
 Gray  CC 0

Gamedev - Concrete Textures. CC0 License.

Source Davit Masia

Fruit on a branch #1969
 Dark  CC 0

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

Source Firkin

Pattern & Light #1619
 Wall  CC 0

Fence. CC0 License.

Source Unknow

Decorative divider 204 #2388
 Dark  CC 0

Adapted from a jpg on Pixabay.

Source Firkin

Seamless Core Pattern 6 #170
 Dark  CC 0

Seamless Core Pattern 6

Source GDJ

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

Prismatic Snowflakes Pattern 2 No Background

Source GDJ

Retro Squares [email protected] #415
 Noise  CC 0

Retro Squares Background

Source GDJ

Background pattern 221 #2347
 Dark  CC 0

A seamless pattern formed from a tile made from ornament 22. To get the tile, select the rectangle in Inkscape and use shift+alt+i.

Source Firkin

Leaded glass background (colour 6) #2047
 Colorful  CC 0

Seamless pattern the tile.

Source Firkin

Plain & Wood #1355
 Wood  CC 0

CC0 for Free, hope you like it.

Source Yethiel

Floral design 70 #2520
 Dark  CC 0

Traced from a drawing in 'Household Stories from the Collection of the Brothers Grimm', Wilhelm Carl Grimm , 1882.

Source Firkin

Green Fibers #91
 Dark  CC BY-SA 3.0

The green fibers pattern will work very well in grayscale as well.

Source Matteo Di Capua

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

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

Source Viahorizon

Satin Weave #1044
 Light  CC BY-SA 3.0

Super simple but very nice indeed. Gray with vertical stripes.

Source Merrin Macleod

Cherry pattern #1912
 Unknow  CC 0

Used a cherry by doctormo to make this seamless pattern

Source Firkin

Part of Bayeux Tapestry 2 #2451
 Noise  CC 0

From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.

Source Firkin

Brushed [email protected] #68
 Light  CC BY-SA 3.0

A light brushed aluminum pattern for your pleasure.

Source Tim Ward