Carbon Fiber #3
Carbon CC BY-SA 3.0A dark pattern made out of 3×3 circles and a 1px shadow. This works well as a carbon texture or background.
Source Atle Mo
More Textures
Concrete Wall 3 #93
Light CC BY-SA 3.0All good things come in threes, so I give you the third in my little concrete wall series.
Source Atle Mo
Decorative divider 188 #2521
Dark CC 0From a drawing in 'Uit de geschiedenis der Heilige Stede te Amsterdam', Yohannes Sterck, 1898.
Source Firkin
Background pattern 314 #1839
Yellow CC 0The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Prismatic Snowflakes Pattern No Background #411
Light CC 0Prismatic Snowflakes Pattern No Background
Source GDJ
Patterned metal plate 7 #2556
Metal CC 0From an image on opengameart.org shared by rubberduck.
Source Firkin
Metal Grid Pattern #1091
Metal CC BY-SA 3.0A repeatable image with dark background and metal grid pattern.
Source V. Hartikainen
Fabric 1 #9
Light CC BY-SA 3.0Semi-light fabric pattern made out of random pixels in shades of gray.
Source Atle Mo
"Brown Stone Wall" #1026
Stone CC BY-SA 3.0A free seamless background texture that looks like a brown stone wall.
Source V. Hartikainen
Old Mathematics #43
Stripes CC BY-SA 3.0This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
Repeating Website Background (Blue Gray) #1192
Concrete CC BY-SA 3.0The following repeating website background is colored in a blue gray color and resembles a concrete wall or something similar to it.
Source V. Hartikainen
Video Game Website Background #1327
Green CC BY-SA 3.0This background pattern has futuristic look. So, maybe it could be used on websites or blogs dedicated to video games?!
Source V. Hartikainen
Tex2res5@2X #726
Fabric CC BY-SA 3.0Number 5 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Prismatic Basic Pattern 2 No Background@2X #448
Noise CC 0Prismatic Basic Pattern 2 No Background
Source GDJ
Grunge Wall #81
Wall CC BY-SA 3.0Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf
Background pattern 309 (colour 2) #1865
Blue CC 0Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Fabric pattern (colour 5) #2398
Fabric CC 0Alternative colour scheme. Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Background Patterns Lazuli #253
Fabric CC 0If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Cake pattern #2480
Colorful CC 0A seamless pattern formed from miutopia's cakes on a tablecloth.
Source Firkin
Tree and bird pattern #1982
Green CC 0From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin