Carbon Fiber v2 #105
 Carbon  CC BY-SA 3.0

One more updated pattern. Not really carbon fiber, but it’s the most popular pattern, so I’ll give you an extra choice.

Source Atle Mo

 More Textures
Lined Paper #362
 Stripes  CC BY-SA 3.0

The classic notebook paper with horizontal stripes.

Source Are Sundnes

Decorative divider 254 #2040
 Dark  CC 0

Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857

Source Firkin

Textured [email protected] #1131
 Paper  CC BY-SA 3.0

You know I love paper patterns. Here is one from Stephen. Say thank you!

Source Stephen Gilbert

Pewter & Gray #1637
 Metal  CC 0

Metal-Plain or Painted. CC0 License.

Source Unknow

Paper model of a tetrahedron #139
 Unknow  CC 0

Paper model of a tetrahedron. Modelo de papel de um tetraedro.

Source laobc

Dark [email protected] #373
 Dark  CC BY-SA 3.0

Thin lines, noise and texture creates this crisp dark denim pattern.

Source Marco Slooten

Geometric pattern #2006
 Grid  CC 0

A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i

Source Firkin

[email protected] #110
 Light  CC BY-SA 3.0

A white version of the very popular linen pattern.

Source Ant Ekşiler

Decorative divider 208 #2366
 Dark  CC 0

Derived from elements found in a floral ornament drawing on Pixabay.

Source Firkin

Embossed [email protected] #732
 Paper  CC BY-SA 3.0

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

Source Badhon Ebrahim

Stone Wall & Dark #1526
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Classy Fabric #611
 Dark  CC BY-SA 3.0

This is lovely, just the right amount of subtle noise, lines and textures.

Source Richard Tabor

Prismatic Geometric Tessellation Pattern 4 No [email protected] #558
 Noise  CC 0

Prismatic Geometric Tessellation Pattern 4 No Background

Source GDJ

Debut Light #1012
 Light  CC BY-SA 3.0

Classic 45-degree pattern, light version.

Source Luke McDonald

Grunge Website Background #1122
 Grunge  CC BY-SA 3.0

A seamlessly tile-able grunge background image.

Source V. Hartikainen

Vintage Clay Tile 1 #1458
 Unknow  CC 0

Gamedev - Roofs Textures. CC0 License.

Source Davit Masia

Skewed [email protected] #820
 Dark  CC BY-SA 3.0

An interesting dark spotted pattern at an angle.

Source Hendrik Lammers

Square Flower #1691
 Paper  CC 0

Paper-Wallpaper. CC0 License.

Source Unknow

gourd seamless pattern #2277
 Brown  CC 0

The image depicts a seamless pattern which includes hexagonally-aligned gourds with BG in light-brown.

Source Yamachem

Checkered Light Emboss #280
 Grid  CC BY-SA 3.0

Sort of like the Photoshop transparent background, but better!

Source Alex Parker

Background pattern 227 (colour 6) #2309
 Red  CC 0

A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.

Source Firkin

R.I.P Steve [email protected] #293
 Paper  CC BY-SA 3.0

He influenced us all. “Don’t be sad because it’s over. Smile because it happened.”

Source Atle Mo

Prismatic Abstract Geometric Background 2 No [email protected] #446
 Noise  CC 0

Prismatic Abstract Geometric Background 2 No Black

Source GDJ

Elastoplast #282
 Light  CC BY-SA 3.0

A fun-looking elastoplast/band-aid pattern. A hint of orange tone in this one.

Source Josh Green

Abstract Arbitrary Geometric Background #497
 Noise  CC 0

Abstract Arbitrary Geometric Background derived from an image on Pixabay.

Source GDJ

Lorem Ipsum Background #1071
 Paper  CC BY-SA 3.0

An aged paper background tile with smeared and pressed text.

Source V. Hartikainen

Zig-zag pattern 4 #2415
 Grid  CC 0

A seamless pattern based on a rectangular tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.

Source Firkin

Flowery branch #1891
 Colorful  CC 0

Cut from a jpg on Pixabay and vectorized

Source Firkin

Page ornament 21 #2361
 Dark  CC 0

From a design in 'Storia del Palazzo Vecchio in Firenze', Aurelio Gotti, 1889.

Source Firkin