Fancy Deboss #177
 Fabric  CC BY-SA 3.0

Luxury pattern, looking like it came right out of Paris.

Source Daniel Beaton

 More Textures
Circles pattern #1917
 Yellow  CC 0

Fix side and a seamless pattern formed from circles.

Source SliverKnight

Seed #1289
 Wall  CC 0

Zero CC tileable seed texture, edited by me to be seamless from a Pixabay image. CC0

Source Sojan Janso

Abstract Ellipses Background #275
 Dark  CC 0

Abstract Ellipses Background

Source GDJ

Background pattern purple #1946
 Colorful  CC 0

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

Source Firkin

Christmas pattern (colour) #2423
 Fabric  CC 0

Derived from an image on Pixabay.

Source Firkin

Decorative divider 211 #2362
 Dark  CC 0

From a drawing in 'Storia del Palazzo Vecchio in Firenze', Aurelio Gotti, 1889.

Source Firkin

Paper 3 #2114
 Paper  CC 0

CC0 textures, backgrounds.

Source SliverKnight

Spiral pattern 2 #2175
 Dark  CC 0

A seamless pattern drawn in Inkscape.

Source Firkin

Rough [email protected] #692
 Fabric  CC BY-SA 3.0

The classic 45-degree diagonal line pattern, done right.

Source Jorick van Hees

Prismatic Dots Background [email protected] #514
 Dark  CC 0

Prismatic Dots Background 7

Source GDJ

Floors & Block #1599
 Wall  CC 0

Floors-Tiles. CC0 License.

Source Unknow

Vintage pattern #1959
 Grid  CC 0

Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.

Source Firkin

Knitted Netting #603
 Grid  CC BY-SA 3.0

A bit like some carbon, or knitted netting if you will.

Source Anna Litvinuk

Background pattern 15 #201
 Dark  CC 0

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

Source Firkin

Background pattern 228 #2308
 Colorful  CC 0

Non-seamless pattern drawn in Paint.net and vectorised in Vector Magic.

Source Firkin

Floral pattern 9 #2043
 Dark  CC 0

The tile can be had by selecting the rectangle in Inkscape and using shift+alt+i. Remixed from a drawing in 'Flowers of Song', Frederick Weatherly, 1895.

Source Firkin

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

Prismatic Snowflakes Pattern No Background

Source GDJ

Glassy Orange Pattern #1315
 Orange  CC BY-SA 3.0

This pattern comes in orange, and it looks as if it is "made of glass".

Source V. Hartikainen

Background pattern 339 (colour) #1708
 Yellow  CC 0

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

Source Firkin

Rustymetal Glossy #1647
 Metal  CC 0

Metal-Rusty. CC0 License.

Source Unknow

Background pattern 329 #1769
 Dark  CC 0

A pattern formed entirely from squares

Source Firkin

White Wall [email protected] #1021
 Wall  CC BY-SA 3.0

A new one called white wall, not by me this time.

Source Yuji Honzawa

Decorative divider 272 (colour) #1926
 Yellow  CC 0

Remixed from a drawing in 'Hungary. A guide book. By several authors', 1890.

Source Firkin

Nasty [email protected] #1009
 Gray  CC BY-SA 3.0

Nasty or not, it’s a nice pattern that tiles. Like they all do.

Source Badhon Ebrahim

Sine wave background #1735
 Dark  CC 0

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

Source Firkin

Stone Wall & Yellow #1480
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Subtle White Mini Waves #1322
 Unknow  CC BY-SA 3.0

Tiny circle waves, almost like the ocean.

Source Sagive

Asfault 2 #1381
 Dark  CC 0

Gamedev - Asphalt textures. CC0 License.

Source Davit Masia