Rough [email protected] #692
 Fabric  CC BY-SA 3.0

The classic 45-degree diagonal line pattern, done right.

Source Jorick van Hees

 More Textures
Dungeons & Flagons 9 #1425
 Diamond  CC 0

Gamedev - Floors Textures. CC0 License.

Source Davit Masia

Fabric pattern 3 (colour 3) #2385
 Fabric  CC 0

Alternative colour scheme. Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.

Source Firkin

Light Orange Brown Wallpaper #911
 Stripes  CC BY-SA 3.0

A free light orange brown wallpaper with vertical stripes designed for use as a tiled background on websites. An yet another background pattern with vertical stripes.

Source V. Hartikainen

Leafy pattern 9 #1802
 Green  CC 0

Remixed from an image that was uploaded to Pixabay by KirstenStar

Source Firkin

Block Well #1696
 Colorful  CC 0

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

Source Ractapopulous

Mix Stone #1263
 Stone  CC 0

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

Source Sojan Janso

Prismatic Isometric Cube Extra Pattern No [email protected] #789
 Light  CC 0

Prismatic Isometric Cube Extra Pattern No Background

Source GDJ

Prismatic Groovy Concentric Background No [email protected] #452
 Noise  CC 0

Prismatic Groovy Concentric Background No Black

Source GDJ

Background pattern 266 #2068
 Dark  CC 0

Remixed from a drawing in 'Some account of the Worshipful Company of Ironmongers', John Nicholl, 1866.

Source Firkin

Background pattern 252 #2162
 Dark  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

Paper Blank 2 #2116
 Paper  CC 0

CC0 textures, backgrounds.

Source SliverKnight

Dark Circles #306
 Dark  CC BY-SA 3.0

People seem to enjoy dark patterns, so here is one with some circles.

Source Atle Mo

Wild Flowers #1181
 Gray  CC BY-SA 3.0

Tiny little flowers growing on your screen. Nice, huh?

Source Themes Tube

Colorful Floral Background No [email protected] #482
 Light  CC 0

Colorful Floral Background No Black

Source GDJ

"Colorful Stripes", Diagonally Striped Background #903
 Stripes  CC BY-SA 3.0

This background pattern contains worn out colorful stripes as a texture.

Source V. Hartikainen

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

Seamless pattern the tile.

Source Firkin

Arabesque #683
 Diamond  CC BY-SA 3.0

Intricate pattern with Arab influences.

Source David Sanchez

Handmade [email protected] #38
 Paper  CC BY-SA 3.0

White handmade paper pattern with small bumps.

Source Marquis

Prismatic Dots [email protected] #502
 Noise  CC 0

Prismatic Dots Background

Source GDJ

Orange Striped Background Pattern #909
 Stripes  CC BY-SA 3.0

An orange vertically striped background pattern. Feel free to download and use this orange background pattern, for example, on the web). It resembles a wallpaper with vertical stripes or something similar to it.

Source V. Hartikainen

"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

Cork Panel Background Texture #869
 Wood  CC BY-SA 3.0

This one looks like a cork panel. Feel free to use it as a tiled background on your blog or website.

Source V. Hartikainen

Stone Wall & Gray #1500
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Stone Wall & Yellow #1528
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Background pattern 252 (colour 2) #2156
 Brown  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

Flourish 3 #2298
 Dark  CC 0

From a drawing in 'Gately's World's Progress', Charles Beale, 1886.

Source Firkin

Subtle Carbon #949
 Dark  CC BY-SA 3.0

There are many carbon patterns, but this one is tiny.

Source Designova

Colourful background #2008
 Colorful  CC 0

Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic

Source Firkin