Hexellence@2X #706
Light CC BY-SA 3.0Detailed but still subtle and quite original. Lovely gray shades.
Source Kim Ruddock
More Textures
Background pattern 29 #200
Dark CC 0Pattern produced in Paint.net using the Vibrato plug-in.
Source Firkin
Carbon Fiber Big #326
Carbon CC BY-SA 3.0Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
Maze White@2X #1047
Light CC BY-SA 3.0Just like the black maze, only in light gray. Duh.
Source Peax
Tex2res5 #725
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
Diagmonds@2X #337
Dark CC BY-SA 3.0Love the style on this one, very fresh. Diagonal diamond pattern. Get it?
Source INS
Background pattern green #2027
Green CC 0Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Light Grey Floral Motif #344
Wall CC BY-SA 3.0Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
Grid@2X #975
Gray CC BY-SA 3.0There are quite a few grid patterns, but this one is a super tiny grid with some dust for good measure.
Source Dominik Kiss
Background pattern 249 #2179
Blue CC 0To get the tile this is made up from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Double Lined #51
Stripes CC BY-SA 3.0Horizontal and vertical lines on a light gray background.
Source Adam Anlauf
Background pattern 198 #2510
Yellow CC 0A version without colours blended together to give a different look.
Source Firkin
Abstract Arbitrary Geometric Background #497
Noise CC 0Abstract Arbitrary Geometric Background derived from an image on Pixabay.
Source GDJ
Prismatic Curved Diamond Pattern 6 No Background #545
Dark CC 0Prismatic Curved Diamond Pattern 6 No Background
Source GDJ
Cover Red #1282
Red CC 0Zero CC tileable hard cover red book, scanned and made by me. CC0
Source Sojan Janso
Textured Grid Paper #1316
Orange CC BY-SA 3.0A tile-able background for websites with paper-like texture and a grid pattern layered on top of it.
Source V. Hartikainen
Bark #1291
Wall CC 0Zero CC tileable bark texture, photographed and made by me. CC0
Source Sojan Janso
"Beige Stone", Seamless Web Texture #1031
Stone CC BY-SA 3.0It looks like a polished stone surface to me. Download it for free, as always.
Source V. Hartikainen
Background pattern 248 (colour) #2180
Yellow CC 0To get the tile this is made up from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin