Metal Grid Pattern #1091
 Metal  CC BY-SA 3.0

A repeatable image with dark background and metal grid pattern.

Source V. Hartikainen

 More Textures
Abstract Stars Geometric Pattern Prismatic No [email protected] #810
 Noise  CC 0

Abstract Stars Geometric Pattern Prismatic No Background

Source GDJ

Red Wood #1273
 Wood  CC 0

Zero CC tileable wood texture, made by me procedurally in Neo Texture Edit.

Source Sojan Janso

Black Twill #929
 Dark  CC BY-SA 3.0

Trippy little gradients at an angle.

Source Cary Fleming.

Background pattern 215 (colour 4) #2368
 Green  CC 0

A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.

Source Firkin

Stylized lion design #2089
 Dark  CC 0

Derived from a drawing in 'Historiske Afhandlinger', Adolf Jorgensen, 1898.

Source Firkin

"Polished Blue Stone", Seamless Web Texture #1052
 Stone  CC BY-SA 3.0

An abstract web texture of a polished blue stone (or does it look more like ice).

Source V. Hartikainen

Prismatic Snowflakes Pattern 2 No [email protected] #782
 Light  CC 0

Prismatic Snowflakes Pattern 2 No Background

Source GDJ

Stone Wall & Yellow #1579
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Old Moon #1201
 Gray  CC BY-SA 3.0

Awesome name, great pattern. Who does not love space?

Source Nick Batchelor

Prismatic Abstract Background Design No Black #404
 Noise  CC 0

Prismatic Abstract Background Design No Black

Source GDJ

Binding [email protected] #1137
 Light  CC BY-SA 3.0

Light gray version of the Binding pattern that looks a bit like fabric.

Source Newbury

Soft Kill #318
 Dark  CC BY-SA 3.0

Pattern #100! A black classic knit-looking pattern.

Source Factorio.us Collective

Blu Stripes #617
 Fabric  CC BY-SA 3.0

Very simple, very blu(e). Subtle and nice.

Source Seb Jachec

Prismatic Dots Background 5 #509
 Noise  CC 0

Prismatic Dots Background 5

Source GDJ

Shine Dotted #711
 Grid  CC BY-SA 3.0

Tiny shiny dots all over your screen.

Source mediumidee

Stone Wall & Green #1485
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Dark Leather #129
 Dark  CC BY-SA 3.0

You were craving more leather, so I whipped this up by scanning a leather jacket.

Source Atle Mo

"Seamless Bark", Website Background. #879
 Wood  CC BY-SA 3.0

This background pattern contains a seamless texture of bark. It's not very realistic, but I think it looks quite nice.

Source V. Hartikainen

Rocky [email protected] #42
 Light  CC BY-SA 3.0

High detail stone wall with minor cracks and specks.

Source Projecteightyfive

Background pattern 201 (colour 3) #2493
 Grid  CC 0

A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.

Source Firkin

Background pattern 9 (B&W) #212
 Dark  CC 0

Black & white version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net

Source Firkin

Background pattern 202 #2491
 Brown  CC 0

Based on several public domain drawings on Wikimedia Commons. This was formed from a rectangular tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.

Source Firkin

Lead glass tile #2048
 Colorful  CC 0

Mostly just mucked about with the colours and made one of the paths in the lead frame opaque. The glass remains transparent.

Source Firkin

Prismatic Floral Pattern 3 Variation 3 No [email protected] #808
 Noise  CC 0

Prismatic Floral Pattern 3 Variation 3 No Background

Source GDJ

Background pattern 320 (colour 2) #1829
 Dark  CC 0

Formed by distorting a JPG from PublicDomainPictures

Source Firkin

Background pattern 263 #2073
 Pink  CC 0

Actually remixed from a pattern on Pixabay. But then noticed a very similar one on Openclipart.org uploaded by btj51q2.

Source Firkin

Lined [email protected] #363
 Stripes  CC BY-SA 3.0

The classic notebook paper with horizontal stripes.

Source Are Sundnes

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