Grey [email protected] #642
 Paper  CC BY-SA 3.0

A bit strange this one, but nice at the same time.

Source Diogo Silva

 More Textures
[email protected] #1157
 Gray  CC BY-SA 3.0

Dare I call this a «flat pattern»? Probably not.

Source Dax Kieran

Wall #4 Light #779
 Wall  CC BY-SA 3.0

I’m starting to think I have a concrete wall fetish.

Source Atle Mo

Stressed Linen #986
 Dark  CC BY-SA 3.0

We have some linen patterns here, but none that are stressed. Until now.

Source Jordan Pittman

Wavy background #2018
 Colorful  CC 0

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

Source SliverKnight

Little [email protected] #688
 Light  CC BY-SA 3.0

The basic shapes never get old. Simple triangle pattern.

Source Atle Mo

Floral #1679
 Paper  CC 0

Paper-Wallpaper. CC0 License.

Source Unknow

Zodiac pattern #2407
 Colorful  CC 0

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

Source Firkin

Fabric pattern 3 (colour 6) #2382
 Fabric  CC 0

Alternative colour scheme. 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

Background pattern 209 #2432
 Grid  CC 0

A seamless pattern with polka dots.

Source Firkin

Sakura Blossoms Background #389
 Noise  CC 0

Sakura Blossoms Background

Source GDJ

Prismatic Curved Diamond Pattern 6 No [email protected] #546
 Dark  CC 0

Prismatic Curved Diamond Pattern 6 No Background

Source GDJ

Prismatic Snowflakes Pattern No [email protected] #783
 Light  CC 0

Prismatic Snowflakes Pattern No Background

Source GDJ

Colourful bricks pattern (no background) #265
 Noise  CC 0

Original minus the background

Source Firkin

Background pattern 207 (colour 2) #2464
 Colorful  CC 0

A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.

Source Firkin

Glass & Gray #1624
 Gray  CC 0

Glass. CC0 License.

Source Unknow

Mirrored [email protected] #124
 Dark  CC BY-SA 3.0

Did some testing with Repper Pro tonight, and this gray mid-tone pattern came out.

Source Atle Mo

Ocean decorative divider #1904
 Dark  CC 0

Vector version of a png that was uploaded to Pixabay by pencilparker

Source Firkin

Plain & Walnut Flame #1357
 Wood  CC 0

CC0 for Free, hope you like it.

Source Yethiel

Background pattern 215 (colour 3) #2369
 Pink  CC 0

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

Source Firkin

Background pattern purple #1952
 Colorful  CC 0

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

Source Firkin

Colorful Floral Pattern Background 8 #230
 Fabric  CC 0

PDP

Source GDJ

Retro Circles Background 7 No [email protected] #434
 Unknow  CC 0

Retro Circles Background 7 No Black

Source GDJ

Seamless Gray Stone Background #1028
 Stone  CC BY-SA 3.0

This background image has seamless texture that resembles a surface of gray stone.

Source V. Hartikainen

Floral divider 6 #1748
 Dark  CC 0

From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.

Source Firkin

Decorative divider 229 #2151
 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

Waves #1694
 Paper  CC 0

Paper-Wallpaper. CC0 License.

Source Unknow

Background pattern 314 (colour 4) #1836
 Blue  CC 0

The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i

Source Firkin

Beige Stripes #938
 Stripes  CC BY-SA 3.0

A repeating background of beige (or is it more vanilla yellow) textured stripes. One more background with stripes.

Source V. Hartikainen

Gears pattern 4 #2238
 Green  CC 0

A seamless pattern formed from gears.

Source Firkin

Pixel [email protected] #1155
 Unknow  CC BY-SA 3.0

Clean and crisp lines all over the place. Wrap it up with this one.

Source Dax Kieran