Floral Abstract Pattern Background #217
 Noise  CC 0

PDP

Source GDJ

 More Textures
Clover with background #237
 Paper  CC 0

Clover with background for St. Patrick's Day. Add to a card with a doily, ribbon, a leprechaun or other embellishments.

Source BAJ

Starry background 2 #1935
 Dark  CC 0

Inspired by a design seen on Pixabay

Source Firkin

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

Embossed Paper #731
 Paper  CC BY-SA 3.0

One more from Badhon, sharp horizontal lines making an embossed paper feeling.

Source Badhon Ebrahim

Dark [email protected] #620
 Dark  CC BY-SA 3.0

Continuing the geometric trend, here is one more.

Source Mike Warner

Decorative divider #1974
 Dark  CC 0

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

Source Firkin

Silver [email protected] #190
 Light  CC BY-SA 3.0

Turn your site into a dragon with this great scale pattern.

Source Alex Parker

Zodiac sign symbol background #1927
 Red  CC 0

Just the symbols of the signs of the zodiac distributed in a chequer board-like pattern

Source Firkin

Concretia 8 #1415
 Gray  CC 0

Gamedev - Concrete Textures. CC0 License.

Source Davit Masia

Prismatic Rounded Squares Grid 3 No Background #489
 Noise  CC 0

Prismatic Rounded Squares Grid 3 No Background

Source GDJ

Prismatic Groovy Concentric Background 3 No Black #459
 Noise  CC 0

Prismatic Groovy Concentric Background 3 No Black

Source GDJ

Prismatic Groovy Concentric Background 2 No Black #455
 Noise  CC 0

Prismatic Groovy Concentric Background 2 No Black

Source GDJ

Stone Wall & Yellow #1491
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Stone Wall & Yellow #1569
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Background pattern 208 #2465
 Grid  CC 0

A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.

Source Firkin

Colorful Stripes [email protected] #794
 Noise  CC 0

Colorful Stripes Background

Source GDJ

Elegant Grid #316
 Wall  CC BY-SA 3.0

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

Source GraphicsWall

Dark [email protected] #321
 Wood  CC BY-SA 3.0

A beautiful dark wood pattern, superbly tiled.

Source Omar Alvarado

Metal Pole Rusty & Green #1653
 Metal  CC 0

Metal-Rusty. CC0 License.

Source Unknow

Rain pattern #1933
 Water  CC 0

To get the repeating unit, select the rectangle in Inkscape and use shift+alt+i

Source Firkin

PW [email protected] #1143
 Light  CC BY-SA 3.0

Vertical and horizontal lines form some cubes.

Source Peax

Background pattern 258 (colour) #2134
 Red  CC 0

Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.

Source Firkin

Use Your Illusion #917
 Dark  CC BY-SA 3.0

A dark one with geometric shapes and dotted lines.

Source Mohawk Studios

Pixel Weave #1154
 Unknow  CC BY-SA 3.0

Clean and crisp lines all over the place. Wrap it up with this one.

Source Dax Kieran

Abstract Water Texture (Seamless) #890
 Water  CC BY-SA 3.0

An abstract texture of water. It's not perfect, but will do. You may download if you like it.

Source V. Hartikainen