Light [email protected] #696
 Grid  CC BY-SA 3.0

Submitted as a black pattern, I made it light and a few steps more subtle.

Source Andy

 More Textures
Prismatic Arrows Background #392
 Noise  CC 0

Prismatic Arrows Background

Source GDJ

Pink Clouds Background #1230
 Pink  CC BY-SA 3.0

Actually, there's no clouds in it, but I think it looks quite nice.

Source V. Hartikainen

Dark Denim 3 #595
 Dark  CC BY-SA 3.0

This is the third pattern called Dark Denim, but hey, we all love them!

Source Brandon Jacoby

Random Binary Background #274
 Light  CC 0

Random Binary Background

Source GDJ

Metal Pole Rusty & Yellow #1651
 Metal  CC 0

Metal-Rusty. CC0 License.

Source Unknow

Diminishing design 5 #1725
 Blue  CC 0

Adapted from an image that was uploaded to Pixabay by Anerma.

Source Firkin

Flourish pattern (colour) #1737
 Yellow  CC 0

Remixed from an image that was uploaded to Pixabay by Pixeline

Source Firkin

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

Vertical and horizontal lines form some cubes.

Source Peax

Background pattern Pink #1938
 Pink  CC 0

Fix and cc0 to get the tile this is based on.

Source SliverKnight

Background pattern 215 #2371
 Brown  CC 0

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

Source Firkin

Leafy pattern 14 #1717
 Dark  CC 0

Derived from an image on Pixabay from Merio

Source Firkin

Background pattern 18 #202
 Dark  CC 0

A seamless pattern the starting point for which was a 'colour modulo' texture in Paint.net.

Source Firkin

Decorative divider 231 #2149
 Dark  CC 0

From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.

Source Firkin

Floors & Block #1604
 Wall  CC 0

Floors-Tiles. CC0 License.

Source Unknow

Leafy pattern 6 #1852
 Green  CC 0

Remixed from a PNG that was uploaded to Pixabay by gingertea

Source Firkin

Lockingstripes #1685
 Paper  CC 0

Paper-Wallpaper. CC0 License.

Source Unknow

Tiny [email protected] #892
 Light  CC BY-SA 3.0

You know, tiny and sharp. I’m sure you’ll find a use for it.

Source Atle Mo

Paper Fibers #1060
 Paper  CC BY-SA 3.0

Just what the name says, paper fibers. Always good to have.

Source Heliodor jalba

Seamless Core Pattern 6 #170
 Dark  CC 0

Seamless Core Pattern 6

Source GDJ

Congruent Pentagon #1307
 Unknow  CC BY-SA 3.0

Inspired by this, I came up with this pattern. Madness!

Source Atle Mo

Leafy pattern 7 (colour 3) #1825
 Green  CC 0

Alternative colour scheme.

Source Firkin

Background pattern 227 (colour 5) #2310
 Colorful  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

[email protected] #750
 Dark  CC BY-SA 3.0

A topographic map like this has actually been requested a few times, so here you go!

Source Sam Feyaerts

Twinkle Twinkle #1010
 Dark  CC BY-SA 3.0

A very dark spotted twinkle pattern for your twinkle needs.

Source Badhon Ebrahim

Deevad Torchon #1667
 Paper  CC 0

Paper. CC0 License.

Source Unknow

Decorative divider 235 #2091
 Dark  CC 0

From a drawing in 'The Quiver of Love', Walter Crane, 1876

Source Firkin

Fabric pattern 2 #2396
 Fabric  CC 0

Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.

Source Firkin

Page ornament 29 #2307
 Red  CC 0

From a drawing in 'Az Osztrák-Magyar Monarchia irásban és képben', 1885.

Source Firkin

Tessellation 15 (colour) #2222
 Blue  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

Grass #1286
 Unknow  CC 0

Zero CC tileable dry grass texture, photographed and made by me. CC0

Source Sojan Janso