Zig-zag pattern 5 #2414
Grid CC 0A seamless pattern based on a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
More Textures
Skewed Print #819
Dark CC BY-SA 3.0An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
Twinkle Twinkle #1010
Dark CC BY-SA 3.0A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
Green Dust & Scratches@2X #108
Wall CC BY-SA 3.0Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
R.I.P Steve Jobs@2X #293
Paper CC BY-SA 3.0He influenced us all. “Don’t be sad because it’s over. Smile because it happened.”
Source Atle Mo
Background pattern 277 #2029
Dark CC 0A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
P4 #1111
Light CC BY-SA 3.0I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
Green Fibers #91
Dark CC BY-SA 3.0The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
Lined Paper #1034
Light CC BY-SA 3.0I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
Kaleidoscope Prismatic Abstract No Background #387
Noise CC 0Kaleidoscope Prismatic Abstract No Background
Source GDJ
Background pattern 198 (variant 2) #2509
Yellow CC 0A version without colours blended together to give a different look.
Source Firkin
White Wall 3@2X #1149
Wall CC BY-SA 3.0This one needs to be used in small areas; you can see it repeat.
Source Luca
Prismatic Abstract Background Design No Black@2X #790
Noise CC 0Prismatic Abstract Background Design No Black
Source GDJ
Bark #1288
Wall CC 0Zero CC tileable bark texture, photographed and made by me. CC0
Source Sojan Janso
Fabric 1 #9
Light CC BY-SA 3.0Semi-light fabric pattern made out of random pixels in shades of gray.
Source Atle Mo
Tessellation 10 (variant 2) #2544
Grid CC 0An alternative colour scheme to the original seamless pattern.
Source Firkin
Decorative divider 232 #2148
Dark CC 0From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
White Wall 2@2X #1021
Wall CC BY-SA 3.0A new one called white wall, not by me this time.
Source Yuji Honzawa
"Pink Bump Dots", Background Tile #1234
Pink CC BY-SA 3.0A free background tile with a pattern of pink bump dots. This background tile is sweet! Moreover, it's designed for use as website backgrounds.
Source V. Hartikainen
Abstract Tiled Background Extended 10 #521
Noise CC 0Abstract Tiled Background Extended 10
Source GDJ
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