Leaded glass background #2049
 Colorful  CC 0

Seamless pattern the tile.

Source Firkin

 More Textures
Wood 3 #1445
 Wood  CC 0

Gamedev - Wood Textures. CC0 License.

Source Davit Masia

Mooning #1140
 Gray  CC BY-SA 3.0

The classic subtle pattern. Sort of wall/brick looking. Or moon-looking?

Source Joel Klein

Abstract Arbitrary Geometric Background #497
 Noise  CC 0

Abstract Arbitrary Geometric Background derived from an image on Pixabay.

Source GDJ

Tactile Paving A1 #2121
 Wall  CC 0

CC0 textures, backgrounds.

Source SliverKnight

blocky filter pack 2 #158
 Noise  CC 0

Wasn't satisfied with the original's colouring. Too much component transfer and colormatrixes yet the results are lacking a bit. So this time it is a simple black to transparent fade, making it possible remixing easily once there will be other blending modes supported as well. Probably in inkscape 0.92.

Source Lazur URH

Seamless tile 4 #1812
 Red  CC 0

Not strictly seamless in that opposite edges are not identical. But they do marry up to make an interesting pattern

Source Firkin

Wood 6b #1450
 Wood  CC 0

Gamedev - Wood Textures. CC0 License.

Source Davit Masia

Cloth & Gray #1622
 Fabric  CC 0

Fabric. CC0 License.

Source Unknow

Prismatic Geometric Tessellation Pattern No Background #551
 Noise  CC 0

Prismatic Geometric Tessellation Pattern No Background

Source GDJ

Symphony #1339
 Light  CC BY-SA 3.0

Enjoy this like classical music.

Source iliad

Background pattern 195 #2587
 Grid  CC 0

Inspired by a pattern I saw in a 19th century book. This seamless pattern was created from a square tile. To get the tile, select the pattern in Inkscape and use shift+alt+i.

Source Firkin

Floral background 21 (colour) #1784
 Dark  CC 0

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

Source Firkin

Geometric pattern #2003
 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

Fake Luxury #621
 Diamond  CC BY-SA 3.0

Fake or not, it’s quite luxurious.

Source Factorio.us Collective

Olive Green Web Background Image #1335
 Green  CC BY-SA 3.0

Seamless Olive Green Web Background Image

Source V. Hartikainen

Cross pattern (negative) #2332
 Dark  CC 0

A seamless pattern formed from cross 4. To get the original tile select the rectangle in Inkscape and use shift-alt-i.

Source Firkin

Background pattern 246 (colour 4) #2183
 Green  CC 0

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

Source Firkin

Church #633
 Paper  CC BY-SA 3.0

I have no idea what J Boo means by this name, but hey – it’s hot.

Source j Boo

Background pattern 230 #2304
 Yellow  CC 0

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

Source Firkin

Floral background 16 (colour) #1913
 Colorful  CC 0

Floral background 16 (colour)

Source Firkin

Floral background 17 #1851
 Green  CC 0

Vector version of a JPG that was uploaded to Pixabay by theasad121

Source Firkin

Rainbow flag pattern #1873
 Colorful  CC 0

The tile can be had by using shift+alt+i on the selected rectangle in Inkscape

Source Firkin

Lined Paper #1034
 Light  CC BY-SA 3.0

I know there is one here already, but this is sexy!

Source Gjermund Gustavsen

Floral design #1984
 Green  CC 0

Remixed from a drawing in 'Line and form', Walter Crane, 1914.

Source Firkin

Tessellation 16 (colour 4) #2212
 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

Flourish decorative divider #1732
 Dark  CC 0

Remixed from an image that was uploaded to Pixabay by Pixeline

Source Firkin

Background pattern 309 (colour 3) #1864
 Red  CC 0

Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.

Source Firkin

Retro Circles Background [email protected] #421
 Dark  CC 0

Retro Circles Background 4

Source GDJ