Wood Background Pattern #882
 Wood  CC BY-SA 3.0

A seamless background pattern with a texture of wood planks. This wood background pattern has vertically arranged planks. You may try to rotate it 90°, to see how it will look like when the wood planks are arranged horizontally.

Source V. Hartikainen

 More Textures
Background pattern pink and colours #2032
 Colorful  CC 0

A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.

Source Firkin

Floral design 87 #1886
 Dark  CC 0

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

Source Firkin

Honey I’m Subtle #1038
 Gray  CC BY-SA 3.0

A mid-gray hexagon pattern.

Source Alex M. Balling

"Cork Board", Seamless Background For Websites #875
 Wood  CC BY-SA 3.0

Seamless Background For Websites. It has a texture similar to cork-board.

Source V. Hartikainen

Lego background #266
 Noise  CC 0

Background formed from the iconic plastic construction bricks that gave me endless hours of fun when I was a lad.

Source Firkin

Stone Wall & Red #1504
 Red  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Vichy #71
 Light  CC BY-SA 3.0

This one could be the shirt of a golf player. Angled lines in different thicknesses.

Source Olivier Pineda

Triangular #1156
 Gray  CC BY-SA 3.0

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

Source Dax Kieran

Floral design 98 (colour) #1781
 Green  CC 0

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

Source Firkin

Concretia 7 #1414
 Gray  CC 0

Gamedev - Concrete Textures. CC0 License.

Source Davit Masia

Background pattern pink #1948
 Pink  CC 0

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

Source Firkin

Cube & Dark #1626
 Dark  CC 0

Manmade & Civilisation-Tech-Lights. CC0 License.

Source Unknow

"Beige Stone", Seamless Web Texture #1031
 Stone  CC BY-SA 3.0

It looks like a polished stone surface to me. Download it for free, as always.

Source V. Hartikainen

Floral pattern 7 (colour 5) #2287
 Green  CC 0

Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.

Source Firkin

Knitted [email protected] #604
 Grid  CC BY-SA 3.0

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

Source Anna Litvinuk

Carbon Fiber [email protected] #106
 Carbon  CC BY-SA 3.0

One more updated pattern. Not really carbon fiber, but it’s the most popular pattern, so I’ll give you an extra choice.

Source Atle Mo

Decorative divider #2001
 Dark  CC 0

From a drawing in 'La Principauté de Liège et les Pays-Bas au XVIe siècle', Société des Bibliophiles Liégeois ,1887.

Source Firkin

Black And White Floral Pattern Background Inverse #196
 Dark  CC 0

Black And White Floral Pattern Background Inverse

Source GDJ

Floors & Block #1604
 Wall  CC 0

Floors-Tiles. CC0 License.

Source Unknow

Brushed Alum [email protected] #66
 Dark  CC BY-SA 3.0

Because I love dark patterns, here is Brushed Alum in a dark coating.

Source Tim Ward

Worn Dots #709
 Fabric  CC BY-SA 3.0

These dots are already worn for you, so you don’t have to.

Source Matt McDaniel

Inspiration [email protected] #1176
 Unknow  CC BY-SA 3.0

This one is rather fun and playful. The 2X could be used at 1X too!

Source Welsley

flower seamless pattern #2272
 Brown  CC 0

This is a seamless pattern which is derived from a flower petal image.

Source Yamachem

fishnet seamless pattern #2483
 Grid  CC 0

The image is a seamless pattern of a fishnet.

Source Yamachem

Triangular Psychosis 4 #236
 Noise  CC 0

A colorful triangular background, variation 4.

Source GDJ

Leafy design 18 (colour) #1786
 Green  CC 0

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

Source Firkin

Prismatic Groovy Concentric Background [email protected] #454
 Noise  CC 0

Prismatic Groovy Concentric Background 2

Source GDJ

Stone Wall & Green #1483
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Seamless Marble Like Texture (Light Blue) #1033
 Stone  CC BY-SA 3.0

A seamless marble-like texture colored in light blue.

Source V. Hartikainen

Noise [email protected] #898
 Paper  CC BY-SA 3.0

Lovely pattern with some good-looking non-random noise lines.

Source Zucx