White Linen #839
Light CC BY-SA 3.0Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz
More Textures
Escheresque #777
Light CC BY-SA 3.0Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
Green Fibers@2X #92
Dark CC BY-SA 3.0The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
Prismatic Abstract Geometric Background 5@2X #793
Noise CC 0Prismatic Abstract Geometric Background 5
Source GDJ
"Black Metal Grid", Seamless Background Pattern #1080
Metal CC BY-SA 3.0A free seamless background pattern for use on websites.
Source V. Hartikainen
Tree Bark #1182
Light CC BY-SA 3.0This one is something special. I’d call it a flat pattern, too. Very well done, sir!
Source GetDiscount
Flourish 1 #2300
Dark CC 0From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
Rocky Wall@2X #42
Light CC BY-SA 3.0High detail stone wall with minor cracks and specks.
Source Projecteightyfive
Inspiration Geometry@2X #1176
Unknow CC BY-SA 3.0This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
Carbon Fiber Big@2X #327
Carbon CC BY-SA 3.0Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
Orange-red Pattern #995
Stripes CC BY-SA 3.0Orange-red pattern for tiled backgrounds.
Source V. Hartikainen
Old Brown Leather, Seamless Texture #1117
Leather CC BY-SA 3.0This texture looks like old leather. It should look great as a background on web pages.
Source V. Hartikainen
Paper #657
Paper CC BY-SA 3.0Nicely crafted paper pattern, although a bit on the large side (500x593px).
Source Blaq Annabiosis
Wavy background #2018
Colorful CC 0CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
White carbon #11
Carbon CC BY-SA 3.0Same as the black version, but now in shades of gray. Very subtle and fine grained.
Source Atle Mo
Decorative divider 282 #1857
Dark CC 0From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
Tex2res3 #723
Fabric CC BY-SA 3.0Number 4 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Elastoplast #282
Light CC BY-SA 3.0A fun-looking elastoplast/band-aid pattern. A hint of orange tone in this one.
Source Josh Green
Photography@2X #1305
Unknow CC BY-SA 3.0Neat little photography icon pattern.
Source Hossam Elbialy
PS Neutral #1134
Light CC BY-SA 3.0This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
Subtle White Feathers@2X #1104
Light CC BY-SA 3.0This one is amazing, truly original. Go use it!
Source Viahorizon
Absurdity@2X #826
Light CC BY-SA 3.0Bit of a strange name on this one, but still nice. Tiny gray square things.
Source Carlos Valdez
Old Cardboard, Background Texture #1213
Cardboard CC BY-SA 3.0A seamless background texture of old cardboard.
Source V. Hartikainen
"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
Kinda Jean #1062
Gray CC BY-SA 3.0A nice one indeed, but I have a feeling we have it already? If you spot a copy, let me know on Twitter.
Source Graphiste
Floral pattern 12 #1766
Dark CC 0Derived from an image that was uploaded to Pixabay by pugmom40
Source Firkin