Black Metallic Pattern #1090
 Metal  CC BY-SA 3.0

A free black metallic background pattern. Here's a new pattern I made that looks metallic.

Source V. Hartikainen

 More Textures
Retro [email protected] #894
 Gray  CC BY-SA 3.0

A slightly more textured pattern, medium gray. A bit like a potato sack?

Source Bilal Ketab

Lock and key pattern #1884
 Yellow  CC 0

Seamless pattern formed from a key and lock.

Source Firkin

Wine Cork #33
 Light  CC BY-SA 3.0

Wine cork texture based off a scanned corkboard.

Source Atle Mo

Background pattern 306 (colour 4) #1877
 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

Fabric Pattern with Stitch Holes #1163
 Fabric  CC BY-SA 3.0

A grayscale fabric pattern with vertical lines of stitch holes.

Source V. Hartikainen

Grunge For Surfaces 3 #1400
 Dark  CC 0

Gamedev - Metal Textures. CC0 License.

Source Davit Masia

Mix & Black Pattern #1636
 Metal  CC 0

Metal-Plain or Painted. CC0 License.

Source Unknow

"Wide Stripe Wallpaper", Seamless Pattern #970
 Stripes  CC BY-SA 3.0

A seamless pattern with wide vertical stripes colored in pale yellow.

Source V. Hartikainen

Fabric 1 #9
 Light  CC BY-SA 3.0

Semi-light fabric pattern made out of random pixels in shades of gray.

Source Atle Mo

Stone Wall & Green #1483
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Prismatic Polka Dots Mark II No [email protected] #531
 Noise  CC 0

Prismatic Polka Dots Mark II No Background

Source GDJ

lotus crane #2499
 Concrete  CC 0

The image depicts a seamless pattern of the design which includes a stylized lotus and a stylized crane.I referred to the original image in a book which is into public domain.

Source Yamachem

Darth Stripe #99
 Dark  CC BY-SA 3.0

Diagonal lines with a lot of texture to them.

Source Ashton

Dark [email protected] #307
 Dark  CC BY-SA 3.0

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

Source Atle Mo

Vintage tile background (colour 3) #2246
 Green  CC 0

A background formed from an image of an old tile on the New York Metropolitan Museum of Art website. To get the base tile, select the rectangle in Inkscape and use shift-alt-i.

Source Firkin

Prismatic Curved Diamond Pattern 5 No [email protected] #544
 Diamond  CC 0

Prismatic Curved Diamond Pattern 5 No Background

Source GDJ

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

Colorful Floral Background [email protected] #488
 Dark  CC 0

Colorful Floral Background 2

Source GDJ

Light Brown Wallpaper With Vertical Stripes #905
 Stripes  CC BY-SA 3.0

This seamless light brown background texture resembles a wallpaper with vertical stripes. One way to use it is as a tiled background on web sites.

Source V. Hartikainen

Flowery pattern 3 (BW) #2331
 Dark  CC 0

Adapted from a jpg on Pixabay.

Source Firkin

Floral tile 2 #1928
 Colorful  CC 0

A seamless tile made from flower 138.

Source Firkin

Abstract Geometric Monochrome Pattern Prismatic No [email protected] #809
 Noise  CC 0

Abstract Geometric Monochrome Pattern Prismatic No Background

Source GDJ

Background pattern black #2026
 Dark  CC 0

Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.

Source Firkin

Graphene pattern 2 #2234
 Dark  CC 0

Formed from a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.

Source Firkin

Background pattern 235 (colour 3) #2253
 Pink  CC 0

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

Source Firkin

Paper [email protected] #22
 Paper  CC BY-SA 3.0

New paper pattern with a slightly organic feel to it, using some thin threads.

Source Atle Mo