White Paperboard #374
 Fabric  CC BY-SA 3.0

Could be paper, could be a Polaroid frame – up to you!

Source Chaos

 More Textures
Abstract Tiled Background Extended 8 #519
 Noise  CC 0

Abstract Tiled Background Extended 8

Source GDJ

Retro Squares Background 2 #416
 Noise  CC 0

Retro Squares Background 2

Source GDJ

Graphcoders Lil [email protected] #730
 Fabric  CC BY-SA 3.0

Tiny little fibers making a soft and sweet look.

Source Badhon Ebrahim

Background pattern 309 (colour 3) #1864
 Red  CC 0

Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.

Source Firkin

Horses pattern #1883
 Unknow  CC 0

Use shift+alt+i on the selected rectangle in Inkscape to get the tile this is based on

Source Firkin

Green Fibers #91
 Dark  CC BY-SA 3.0

The green fibers pattern will work very well in grayscale as well.

Source Matteo Di Capua

Background pattern 227 (colour 5) #2310
 Colorful  CC 0

A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.

Source Firkin

Prismatic Groovy Concentric Background 5 #465
 Dark  CC 0

Prismatic Groovy Concentric Background 5

Source GDJ

Black [email protected] #600
 Dark  CC BY-SA 3.0

Geometric lines are always hot, and this pattern is no exception.

Source Listvetra

Stone Wall & Dark #1493
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Floors & Wood #1613
 Wall  CC 0

Floors-Tiles. CC0 License.

Source Unknow

Pattern & Mix #1620
 Wall  CC 0

Fence. CC0 License.

Source Unknow

More Rough Wood 2 #1428
 Wood  CC 0

Gamedev - Wood Textures. CC0 License.

Source Davit Masia

Decorative divider 248 #2074
 Dark  CC 0

From a drawing in 'Picturesque New Guinea', J Lindt, 1887.

Source Firkin

Mix Stone #1298
 Stone  CC 0

ZeroCC tileable stone texture, edited from pixabay, CC0

Source Sojan Janso

Light Gray Paper With Horizontal Lines #904
 Stripes  CC BY-SA 3.0

A seamless light gray paper texture with horizontal double lines.

Source V. Hartikainen

Pine Bark #1276
 Wall  CC 0

Zero CC tileable pine bark texture, photographed and made by me. CC0

Source Sojan Janso

Decorative divider 231 #2149
 Dark  CC 0

From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.

Source Firkin

Prismatic Curved Diamond Pattern 3 No [email protected] #540
 Diamond  CC 0

Prismatic Curved Diamond Pattern 3 No Background

Source GDJ

Rainbow flag pattern #1873
 Colorful  CC 0

The tile can be had by using shift+alt+i on the selected rectangle in Inkscape

Source Firkin

Tileable Wave Pattern 2 remix #2490
 Dark  CC 0

This is the remix of "Tileable Wave Pattern 2" uploaded by "Arvin61r58".Thanks.I added a wire-mesh fence seamless pattern as a lower layer.

Source Yamachem

[email protected] #134
 Light  CC BY-SA 3.0

This reminds me of Game Cube. A nice light 3D cube pattern.

Source Sander Ottens

Background pattern 235 (colour 2) #2254
 Blue  CC 0

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

Source Firkin

Tileable Off-white Background #1191
 Concrete  CC BY-SA 3.0

A free tileable background colored in off-white (antique white) color.

Source V. Hartikainen

Background pattern 310 #1862
 Red  CC 0

Based on an image that was uploaded to Pixabay by devanath

Source Firkin

Background pattern 242 (colour 6) #2199
 Pink  CC 0

Random colour tile.

Source Firkin

Dark Denim 3 #595
 Dark  CC BY-SA 3.0

This is the third pattern called Dark Denim, but hey, we all love them!

Source Brandon Jacoby

[email protected] #754
 Light  CC BY-SA 3.0

This is so subtle you need to bring your magnifier!

Source Carlos Valdez

Background pattern 207 (colour 2) #2464
 Colorful  CC 0

A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.

Source Firkin