Background pattern 250 (colour 4) #2168
 Blue  CC 0

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

Source Firkin

 More Textures
Asfault 5 #1384
 Dark  CC 0

Gamedev - Asphalt textures. CC0 License.

Source Davit Masia

Prismatic Groovy Concentric Background [email protected] #466
 Dark  CC 0

Prismatic Groovy Concentric Background 5

Source GDJ

Background pattern 24 #198
 Dark  CC 0

The starting point for this was a texture drawn with the 'Radial Colors' plug-in in Paint.net.

Source Firkin

Multiple Greek key frame #1733
 Dark  CC 0

Inspired by a drawing seen in 'City of Liverpool', James Picton, 1883.

Source Firkin

Wellington boots pattern #1900
 Colorful  CC 0

CC0 and seamless wellington boot pattern.

Source SliverKnight

Leafy pattern 9 #1802
 Green  CC 0

Remixed from an image that was uploaded to Pixabay by KirstenStar

Source Firkin

Soft [email protected] #96
 Wall  CC BY-SA 3.0

Coming in at 666x666px, this is an evil big pattern, but nice and soft at the same time.

Source Atle Mo

Tactile Paving A2-2 #2123
 Wall  CC 0

CC0 textures, backgrounds.

Source SliverKnight

"Polished Stone", Gray Background Pattern #1053
 Stone  CC BY-SA 3.0

A seamless gray background texture suitable for use on websites. To me, it has the look of stone. Feel free to modify it to meet your needs (by making it a bit lighter or darker, for example).

Source V. Hartikainen

Background pattern 220 (colour) #2359
 Pink  CC 0

Colour version of the original seamless pattern.

Source Firkin

Background pattern green #1947
 Green  CC 0

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

Source Firkin

Star pattern #2410
 Brown  CC 0

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

Source Firkin

Background pattern 303 #1888
 Unknow  CC 0

Heavily remixed from a drawing that was uploaded to Pixabay by ractapopulous

Source Firkin

Prismatic Diamond Background [email protected] #811
 Diamond  CC 0

Prismatic Diamond Background 6

Source GDJ

Zig-zag pattern 3 #2416
 Grid  CC 0

A seamless pattern based on a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.

Source Firkin

Prismatic Basic Pattern 2 No [email protected] #448
 Noise  CC 0

Prismatic Basic Pattern 2 No Background

Source GDJ

Old Map #1205
 Unknow  CC BY-SA 3.0

An interesting one. Lovely at 2X as well!

Source Andreas Föhl

Tex2res2 #719
 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

Background pattern 268 #2066
 Dark  CC 0

Remixed from a drawing in 'Kulturgeschichte der Deutschen im Mittelalter' Franz von Loeher, 1891. The unit tile can be had by selecting the rectangle in Inkscape and using shift-alt-i

Source Firkin

[email protected] #1179
 Gray  CC BY-SA 3.0

This one is super crisp at 2X. Lined paper with some dust and scratches.

Source HQvectors

[email protected] #628
 Wall  CC BY-SA 3.0

Real snow that tiles, not easy. This is not perfect, but an attempt.

Source Atle Mo

Brushed Aluminum 4 #1392
 Metal  CC 0

Gamedev - Metal Textures. CC0 License.

Source Davit Masia

Background pattern 215 (colour 4) #2368
 Green  CC 0

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

Source Firkin

Floral design 88 #1876
 Dark  CC 0

From a drawing in 'Cowdray: the history of a great English House', Julia Roundell, 1884.

Source Firkin

Spiral pattern 3 #1934
 Dark  CC 0

From a drawing in 'Danmarks Riges Historie af J. Steenstrup, Kr. Erslev, A. Heise, V. Mollerup, J. A. Fridericia, E. Holm, A. D. Jørgensen', 1897.

Source Firkin

Prismatic Hypnotic Pattern 2 No [email protected] #574
 Noise  CC 0

Prismatic Hypnotic Pattern 2 No Background

Source GDJ

Decorative divider 283 (version 2) #1855
 Dark  CC 0

Remixed from a drawing in 'In an Enchanted Island', William Mallock, 1892.

Source Firkin

Decorative divider 239 #2087
 Dark  CC 0

From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.

Source Firkin