Bright Squares #87
 Light  CC BY-SA 3.0

It’s okay to be square! A nice light gray pattern with random squares.

Source Waseem Dahman

 More Textures
Dark Brown Wood Pattern #884
 Wood  CC BY-SA 3.0

A seamless background pattern of dark brown wood planks.

Source V. Hartikainen

Pinstripe #35
 Light  CC BY-SA 3.0

Light gray pattern with a thin pinstripe.

Source Brandon

Colorful Floral Background 3 #483
 Dark  CC 0

Colorful Floral Background 3

Source GDJ

Background pattern 209 #2432
 Grid  CC 0

A seamless pattern with polka dots.

Source Firkin

Grid Noise #645
 Noise  CC BY-SA 3.0

Crossing lines on a light background.

Source Daivid Serif

Stripey ball pattern #1997
 Yellow  CC 0

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

Source Firkin

Prismatic Isometric Cube Wireframe Pattern No [email protected] #500
 Light  CC 0

Prismatic Isometric Cube Wireframe Pattern No Background

Source GDJ

Seamless Prismatic Quadrilateral Line Art Pattern No Background #379
 Diamond  CC 0

Seamless Prismatic Quadrilateral Line Art Pattern No Background

Source GDJ

plant pattern 02 #2504
 Unknow  CC 0

The image a seamless pattern derived from a weed which I can't identify.The original weed image is from here:https://jp.pinterest.com/pin/500744052301423641/

Source Yamachem

Dungeons & Flagons 10 #1426
 Diamond  CC 0

Gamedev - Floors Textures. CC0 License.

Source Davit Masia

Block Well #1698
 Colorful  CC 0

Background Wall, Art Abstract, Block Well & CC0 texture.

Source Ractapopulous

Stone Wall & Yellow #1578
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

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

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

Source Anna Litvinuk

Wood 4 #1447
 Wood  CC 0

Gamedev - Wood Textures. CC0 License.

Source Davit Masia

Patern dots #241
 Dark  CC 0

Pattern repeating background 48x48

Source Keistutis

Tiny [email protected] #892
 Light  CC BY-SA 3.0

You know, tiny and sharp. I’m sure you’ll find a use for it.

Source Atle Mo

Vintage Clay Tile 2 #1459
 Unknow  CC 0

Gamedev - Roofs Textures. CC0 License.

Source Davit Masia

Prismatic Rounded Squares Grid 3 No [email protected] #490
 Noise  CC 0

Prismatic Rounded Squares Grid 3 No Background

Source GDJ

Black [email protected] #56
 Dark  CC BY-SA 3.0

Black paper texture, based on two different images.

Source Atle Mo
Based from Kindle

Tessellation 16 (colour 6) #2210
 Colorful  CC 0

The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i

Source Firkin

Ribbon pattern 2 (version 2, colour 6) #2034
 Pink  CC 0

The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.

Source Firkin

Indian Red Web Background #1172
 Concrete  CC BY-SA 3.0

A free web background image with a seamless concrete-like texture and an Indian-red color.

Source V. Hartikainen

Pyramid #895
 Light  CC BY-SA 3.0

Could remind you a bit of those squares in Super Mario Bros, yeh?

Source Jeff Wall

Wood Web Background #870
 Wood  CC BY-SA 3.0

Here's a tile-able wood background image for use in web design.

Source V. Hartikainen

Stone Wall & Gray #1501
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Flower Trail #741
 Noise  CC BY-SA 3.0

Sharp pixel pattern, just like the good old days.

Source Paridhi

Background pattern 308 (colour 3) #1870
 Colorful  CC 0

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

Source Firkin

Grey Sandbag #641
 Paper  CC BY-SA 3.0

A bit strange this one, but nice at the same time.

Source Diogo Silva

White Wall [email protected] #1021
 Wall  CC BY-SA 3.0

A new one called white wall, not by me this time.

Source Yuji Honzawa

Prismatic Basic Pattern 2 No [email protected] #448
 Noise  CC 0

Prismatic Basic Pattern 2 No Background

Source GDJ