Brushed Aluminum 3 #1391
 Metal  CC 0

Gamedev - Metal Textures. CC0 License.

Source Davit Masia

 More Textures
Wood Texture 2 #1434
 Wood  CC 0

Gamedev - Wood Textures. CC0 License.

Source Davit Masia

Wall #1239
 Stone  CC 0

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

Source Sojan Janso

Notebook #1178
 Gray  CC BY-SA 3.0

This one is super crisp at 2X. Lined paper with some dust and scratches.

Source HQvectors

Triangles #743
 Grid  CC BY-SA 3.0

Sharp but soft triangles in light shades of gray.

Source Pixeden

Background pattern 313 #1858
 Dark  CC 0

Background pattern originally a PNG drawn in Paint.net

Source Firkin

Black Leather Texture (Seamless) #1118
 Leather  CC BY-SA 3.0

A seamless texture of black leather. I think it will look best when used in headers, footers or sidebars.

Source V. Hartikainen

Nami #575
 Dark  CC BY-SA 3.0

Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!

Source Dertig Media

Prismatic Polka Dots 3 No Background #528
 Noise  CC 0

Prismatic Polka Dots 3 No Background

Source GDJ

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

First Aid [email protected] #702
 Fabric  CC BY-SA 3.0

No, not the band but the pattern. Simple squares in gray tones, of course.

Source Atle Mo

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

Cross [email protected] #48
 Dark  CC BY-SA 3.0

Nice and simple crossed lines in dark gray tones.

Source Stefan Aleksić

Abstract Arbitrary Geometric Background #497
 Noise  CC 0

Abstract Arbitrary Geometric Background derived from an image on Pixabay.

Source GDJ

Background pattern 263 (colour 2) #2072
 Leather  CC 0

Alternative colour scheme.

Source Firkin

Retro Circles Background 7 No Black #433
 Unknow  CC 0

Retro Circles Background 7 No Black

Source GDJ

Floral design 99 #1776
 Dark  CC 0

From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.

Source Firkin

Spiral pattern 3 #1934
 Dark  CC 0

From a drawing in 'Danmarks Riges Historie af J. Steenstrup, Kr. Erslev, A. Heise, V. Mollerup, J. A. Fridericia, E. Holm, A. D. Jørgensen', 1897.

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

Black And White Floral Pattern Background Inverse #196
 Dark  CC 0

Black And White Floral Pattern Background Inverse

Source GDJ

Concretia 3 #1410
 Gray  CC 0

Gamedev - Concrete Textures. CC0 License.

Source Davit Masia

Polaroid #187
 Wall  CC BY-SA 3.0

Smooth Polaroid pattern with a light blue tint.

Source Daniel Beaton

Exclusive Paper #23
 Light  CC BY-SA 3.0

Paper pattern with small dust particles and 45-degree strokes.

Source Atle Mo

Colorful Stripes Background #400
 Noise  CC 0

Colorful Stripes Background

Source GDJ

Geometric pattern #2005
 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

Tessellation 16 (colour 3) #2213
 Green  CC 0

The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.

Source Firkin

Background pattern blue #1940
 Blue  CC 0

Formed by heavily distorting part of a an image of a fish uploaded to Pixabay by GLady

Source Firkin

[email protected] #1179
 Gray  CC BY-SA 3.0

This one is super crisp at 2X. Lined paper with some dust and scratches.

Source HQvectors

Tri-weave #1692
 Paper  CC 0

Paper-Wallpaper. CC0 License.

Source Unknow