Low Contrast Linen #863
Dark CC BY-SA 3.0A smooth mid-tone gray, or low contrast if you will, linen pattern.
Source Jordan Pittman
More Textures
Small Crosses #115
Stripes CC BY-SA 3.0Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
Prismatic Triangular Background Design Mark II 5@2X #788
Dark CC 0Prismatic Triangular Background Design Mark II 5
Source GDJ
blue wave-seigaiha #2535
Blue CC 0The image depicts the Japanese Edo pattern called "seigaiha" or "青海波" meaning "blue -sea- wave".I hope it's suitable for the summer season.
Source Yamachem
Nistri@2X #774
Stripes CC BY-SA 3.0No idea what Nistri means, but it’s a crisp little pattern nonetheless.
Source Markus Reiter
Carpet seamless texture 3 #2553
Wall CC 0From an image on opengameart.org shared by rubberduck.
Source Firkin
Small Crackle Bright #352
Light CC BY-SA 3.0Light gray pattern with an almost wall tile-like appearance.
Source Markus Tinner
"Cork Board", Seamless Background For Websites #875
Wood CC BY-SA 3.0Seamless Background For Websites. It has a texture similar to cork-board.
Source V. Hartikainen
"Black Stripes", Background Pattern #966
Stripes CC BY-SA 3.0A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen
Fabric 1@2X #10
Light CC BY-SA 3.0Semi-light fabric pattern made out of random pixels in shades of gray.
Source Atle Mo
Textured Paper #1130
Paper CC BY-SA 3.0You know I love paper patterns. Here is one from Stephen. Say thank you!
Source Stephen Gilbert
Wall & Red #1363
Wall CC 0Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Background pattern 117@2X #525
Noise CC 0A seamless pattern drawn originally in Paint.net by distorting a slice of background pattern 116 and copying the resulting triangle numerous times.
Source Firkin
Decorative divider 285 #1847
Dark CC 0From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
Circles@2X #186
Light CC BY-SA 3.0One more sharp little tile for you. Subtle circles this time.
Source Blunia
Background pattern 227 (colour 6) #2309
Red CC 0A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
Dark Denim 3@2X #596
Dark CC BY-SA 3.0This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
Background pattern 252 (colour 5) #2158
Light CC 0Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Merely Cubed@2X #590
Grid CC BY-SA 3.0Tiny, tiny 3D cubes. Reminds me of the good old pattern from k10k.
Source Etienne Rallion
Wide Rectangles@2X #700
Wall CC BY-SA 3.0Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
Leafy pattern 11 #1765
Dark CC 0From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Wavy background #2021
Pink CC 0CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Prismatic Polka Dots Mark II No Background@2X #531
Noise CC 0Prismatic Polka Dots Mark II No Background
Source GDJ