Quilt #651
 Light  CC BY-SA 3.0

Not sure what this is, but it looks good!

Source Josh Green

 More Textures
Dungeons & Flagons 5 #1421
 Diamond  CC 0

Gamedev - Floors Textures. CC0 License.

Source Davit Masia

Geometric pattern #2002
 Dark  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

Triangular Psychosis 3 #235
 Noise  CC 0

A colorful triangular background, variation 3.

Source GDJ

Twinkle [email protected] #1011
 Dark  CC BY-SA 3.0

A very dark spotted twinkle pattern for your twinkle needs.

Source Badhon Ebrahim

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

fishnet 01 #2475
 Grid  CC 0

The image depicts a seamless pattern of a fishnet with a plenty of fish.It may be a lucky charm for fishermen.

Source Yamachem

"Dark Red Canvas", Seamless Web Texture #1221
 Red  CC BY-SA 3.0

A free seamless background image with a texture of dark red "canvas". It should look very nice on web sites.

Source V. Hartikainen

Grunge For Surfaces 4 #1401
 Dark  CC 0

Gamedev - Metal Textures. CC0 License.

Source Davit Masia

Asfault 4 #1383
 Dark  CC 0

Gamedev - Asphalt textures. CC0 License.

Source Davit Masia

Random Grey Variations #69
 Stripes  CC BY-SA 3.0

Stefan is hard at work, this time with a funky pattern of squares.

Source Stefan Aleksić

Prismatic Rounded Squares Grid 3 No Background #489
 Noise  CC 0

Prismatic Rounded Squares Grid 3 No Background

Source GDJ

Seamless tile 5 #1804
 Red  CC 0

Formed in Paint.net and vectorised in Vector Magic

Source Firkin

Cork Panel Background Texture #869
 Wood  CC BY-SA 3.0

This one looks like a cork panel. Feel free to use it as a tiled background on your blog or website.

Source V. Hartikainen

Darth [email protected] #100
 Dark  CC BY-SA 3.0

Diagonal lines with a lot of texture to them.

Source Ashton

Pinstripe #35
 Light  CC BY-SA 3.0

Light gray pattern with a thin pinstripe.

Source Brandon

Prismatic Arrows Background [email protected] #801
 Light  CC 0

Prismatic Arrows Background 2

Source GDJ

Zig-zag pattern #2418
 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

Wood Texture 3 #1441
 Wood  CC 0

Gamedev - Wood Textures. CC0 License.

Source Davit Masia

Art Nouveau ornament-seamless pattern #2550
 Brown  CC 0

This is the remix of an OCAL clipart called "Art Nouveau ornament" uploaded by "microcosme".Thanks.This is a seamless pattern of an Art Nouveau ornament.

Source Yamachem

Dark Fish Skin #1048
 Dark  CC BY-SA 3.0

It almost looks a bit blurry, but then again, so are fishes.

Source Petr Šulc

White Sand #19
 Light  CC BY-SA 3.0

Same as gray sand but lighter. A sandy pattern with small light dots, and some angled strokes.

Source Atle Mo

Blizzard #663
 Paper  CC BY-SA 3.0

This is so subtle I hope you can see it! Tweak at will.

Source Alexandre Naud

Cream Pixels #1144
 Light  CC BY-SA 3.0

If you don’t like cream and pixels, you’re in the wrong place.

Source Mizanur Rahman

Floral background 17 (colour 3) #1849
 Blue  CC 0

Remixed from a JPG that was uploaded to Pixabay by theasad121

Source Firkin

"Green Stone", Seamless Web Texture #1050
 Stone  CC BY-SA 3.0

A seamless web texture of "green stone".

Source V. Hartikainen

[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

Seamless Core Pattern 5 #169
 Dark  CC 0

Seamless Core Pattern 5

Source GDJ

Prismatic Pointers [email protected] #806
 Noise  CC 0

Prismatic Pointers Background

Source GDJ

Old [email protected] #44
 Stripes  CC BY-SA 3.0

This one takes you back to math class. Classic mathematic board underlay.

Source Josh Green