Background pattern 306 (colour 6) #1878
 Colorful  CC 0

Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.

Source Firkin

 More Textures
Background pattern 312 (colour 2) #1859
 Red  CC 0

Alternative colour scheme

Source Firkin

Zig [email protected] #329
 Dark  CC BY-SA 3.0

So tiny, just 7 by 7 pixels – but still so sexy. Ah yes.

Source Dmitriy Prodchenko

Pool Table #175
 Wall  CC BY-SA 3.0

This makes me wanna shoot some pool! Sweet green pool table pattern.

Source Caveman

Metal Grid Pattern #1091
 Metal  CC BY-SA 3.0

A repeatable image with dark background and metal grid pattern.

Source V. Hartikainen

Gold Wall & Black #1251
 Wall  CC 0

Zerro CC tillable texture of stones photographed and made by me. CC0

Source Sojan Janso

fence pattern #2487
 Grid  CC 0

The image is the remix of "wire-mesh fence seamless pattern" .This is a more minute version of it.Sorry for the file size.Using path>difference in Inkscape, I will cut out any silhouette from this pattern and create a "meshed silhouette".

Source Yamachem

Seamless Colorful Floral Pattern Background #256
 Fabric  CC 0

PDP

Source GDJ

White Wall [email protected] #1149
 Wall  CC BY-SA 3.0

This one needs to be used in small areas; you can see it repeat.

Source Luca

Orange Gingham Checkered Background #258
 Stripes  CC 0

From PDP.

Source GDJ

Stone Wall & Purple #1541
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Cover Red #1282
 Red  CC 0

Zero CC tileable hard cover red book, scanned and made by me. CC0

Source Sojan Janso

Background pattern 226 (colour 2) #2320
 Green  CC 0

A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.

Source Firkin

Decorative divider 236 #2090
 Dark  CC 0

From a drawing in 'The Quiver of Love', Walter Crane, 1876

Source Firkin

Glass & Gray #1624
 Gray  CC 0

Glass. CC0 License.

Source Unknow

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

Redox 01 #849
 Light  CC BY-SA 3.0

Bright gray tones with a hint of some metal surface.

Source Hendrik Lammers

Decorative divider 254 #2040
 Dark  CC 0

Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857

Source Firkin

Decorative divider 291 #1793
 Dark  CC 0

From a drawing in 'Real Sailor-Songs', John Ashton, 1891.

Source Firkin

Wavy background #2021
 Pink  CC 0

CC0 and a seamless pattern from a tile drawn in Paint.net .

Source SliverKnight

Snow #627
 Wall  CC BY-SA 3.0

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

Source Atle Mo

Specular & Gray Pattern #1641
 Metal  CC 0

Metal-Processed. CC0 License.

Source Unknow

Mix & Blue Pattern #1628
 Metal  CC 0

Metal-Plain or Painted. CC0 License.

Source Unknow

Background pattern 104 #561
 Dark  CC 0

Background pattern 104

Source Firkin

Flower Trail #741
 Noise  CC BY-SA 3.0

Sharp pixel pattern, just like the good old days.

Source Paridhi

Stitched [email protected] #844
 Light  CC BY-SA 3.0

I love these crisp, tiny, super subtle patterns.

Source Badhon Ebrahim

Cover Pink #1284
 Pink  CC 0

Zero CC tillable hard cover red book with X shape marks. Scanned and made by me.

Source Sojan Janso

Spirals pattern #1994
 Colorful  CC 0

Uses spirals from Pixabay. To get the basic tile select the rectangle in Inkscape and use shift+alt+i

Source Firkin