Swirl #947
 Light  CC BY-SA 3.0

The name tells you it has curves. Oh yes, it does!

Source Peter Chon

 More Textures
Food and drink design (colour) #1896
 Colorful  CC 0

Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.

Source Firkin

Retro Circles Background 8 #435
 Dark  CC 0

Retro Circles Background 8

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

Background pattern 223 (colour 2) #2352
 Blue  CC 0

Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.

Source Firkin

Pale Olive Green Background, Seamless Texture #902
 Stripes  CC BY-SA 3.0

A pale olive green background with a seamless texture.

Source V. Hartikainen

Mirrored [email protected] #124
 Dark  CC BY-SA 3.0

Did some testing with Repper Pro tonight, and this gray mid-tone pattern came out.

Source Atle Mo

White Plaster #368
 Wall  CC BY-SA 3.0

Sweet and subtle white plaster with hints of noise and grunge.

Source Phil Maurer

Background pattern 10 #216
 Noise  CC 0

A pattern drawn in Paint.net and vectorized in Vector Magic.

Source Firkin

Background pattern 289 (colour 2) #1936
 Red  CC 0

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

Source Firkin

Prismatic Curved Diamond Pattern No Background #536
 Diamond  CC 0

Prismatic Curved Diamond Pattern No Background

Source GDJ

Flowery pattern 4 #2328
 Colorful  CC 0

Remixed from a vector adapted from a jpg on Pixabay. The tile this is constructed from can be had by selecting the rectangle in Inkscape and using shift-alt-i.

Source Firkin

Background pattern yellow #1999
 Yellow  CC 0

Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i

Source Firkin

Mix & Black Pattern #1632
 Metal  CC 0

Metal-Plain or Painted. CC0 License.

Source Unknow

Light Note Paper #942
 Stripes  CC BY-SA 3.0

Here's an yet another seamless note paper texture for use as a background on websites.

Source V. Hartikainen

Bright Multicolored Floral Background #559
 Noise  CC 0

Bright Multicolored Floral Background by Karen Arnold from PDP.

Source GDJ

Cross [email protected] #48
 Dark  CC BY-SA 3.0

Nice and simple crossed lines in dark gray tones.

Source Stefan Aleksić

Retro Squares Background #414
 Noise  CC 0

Retro Squares Background

Source GDJ

Background pattern 242 (colour 4) #2198
 Yellow  CC 0

Random colour tile.

Source Firkin

Summer leaves pattern #2469
 Green  CC 0

A seamless pattern formed from leaves.

Source Firkin

White carbon #11
 Carbon  CC BY-SA 3.0

Same as the black version, but now in shades of gray. Very subtle and fine grained.

Source Atle Mo

Pattern & Mix #1620
 Wall  CC 0

Fence. CC0 License.

Source Unknow

White [email protected] #772
 Wall  CC BY-SA 3.0

A huge one at 800x600px. Made from a photo I took going home after work.

Source Atle Mo

Patchwork Quilt Pattern Background #228
 Noise  CC 0

PDP

Source GDJ

Decorative divider 204 #2388
 Dark  CC 0

Adapted from a jpg on Pixabay.

Source Firkin

Background pattern 236 #2249
 Dark  CC 0

Seamless pattern the basic tile for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.

Source Firkin

Dark [email protected] #40
 Dark  CC BY-SA 3.0

Very dark pattern with some noise and 45-degree lines.

Source Stefan Aleksić

Decorative divider 250 #2070
 Dark  CC 0

Remixed from a drawing in 'Очерки Русской Исторіи въ памятникахъ быта', Petr Polevoi, 1879.

Source Firkin