Subtle White Feathers #1103
 Light  CC BY-SA 3.0

This one is amazing, truly original. Go use it!

Source Viahorizon

 More Textures
Fabric pattern 2 (colour 3) #2394
 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

Scribble Light #739
 Paper  CC BY-SA 3.0

A bit like smudged paint or some sort of steel, here is scribble light.

Source Tegan Male

Low Contrast Linen #863
 Dark  CC BY-SA 3.0

A smooth mid-tone gray, or low contrast if you will, linen pattern.

Source Jordan Pittman

Background pattern 223 (colour 4) #2350
 Pink  CC 0

Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.

Source Firkin

Floors & Dark Wood #1615
 Wall  CC 0

Floors-Tiles. CC0 License.

Source Unknow

Background pattern 245 (colour 6) #2187
 Colorful  CC 0

This was formed by distorting an image of a background on Pixabay.

Source Firkin

Groovepaper #577
 Paper  CC BY-SA 3.0

With a name like this, it has to be hot. Diagonal lines in light shades.

Source Isaac

Decorative divider 290 #1817
 Dark  CC 0

From a drawing in 'Cassell's Library of English Literature', Henry Morley, 1883.

Source Firkin

Page ornament #1989
 Dark  CC 0

Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.

Source Firkin

[email protected] #720
 Fabric  CC BY-SA 3.0

Number 2 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.

Source Janos Koos

HIXS Evolution #609
 Dark  CC BY-SA 3.0

Heavy depth and shadows here, but might work well on some mobile apps.

Source Damian Rivas

Leafy pattern 8 (colour) #1805
 Green  CC 0

Colour version

Source Firkin

Brown Canvas, Web Texture #1171
 Fabric  CC BY-SA 3.0

A web texture of brown canvas. Will look great, when used in dark web designs.

Source V. Hartikainen

Prismatic Arrows [email protected] #802
 Noise  CC 0

Prismatic Arrows Background

Source GDJ

Sponge A2-5 #2128
 Wall  CC 0

CC0 textures, backgrounds.

Source SliverKnight

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

Tactile Noise #5
 Dark  CC BY-SA 3.0

A heavy dark gray base, some subtle noise and a 45-degree grid makes this look like a pattern with a tactile feel to it.

Source Atle Mo

Rough Cloth #312
 Fabric  CC BY-SA 3.0

More tactile goodness. This time in the form of some rough cloth.

Source Bartosz Kaszubowski

Stone Wall & Yellow #1555
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

[email protected] #718
 Dark  CC BY-SA 3.0

Number 1 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.

Source Janos Koos

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

Prismatic Curved Diamond Pattern 5 No Background

Source GDJ

Pattern generator #161
 Noise  CC 0

A simple example on using clones. You can generate a nice base for a pattern fill quickly with it.

Source Lazur URH

Background pattern 224 #2342
 Colorful  CC 0

To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.

Source Firkin

Wavy background #2023
 Pink  CC 0

CC0 and a seamless pattern from a tile drawn in Paint.net .

Source SliverKnight

Metal & Red #1655
 Metal  CC 0

Metal-Rusty. CC0 License.

Source Unknow

Octagonal frame #2355
 Dark  CC 0

Formed in Paint.net and vectorised in Vector Magic.

Source Firkin

Prismatic Curved Diamond Pattern 6 No Background #545
 Dark  CC 0

Prismatic Curved Diamond Pattern 6 No Background

Source GDJ