Knitted Netting@2X #604
Grid CC BY-SA 3.0A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
More Textures
Green Fibers #91
Dark CC BY-SA 3.0The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
Zig-zag pattern 6 #2413
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
Subtle Dark Vertical@2X #608
Dark CC BY-SA 3.0Classic vertical lines, in all its subtlety.
Source Cody L
Subtle Freckles #89
Light CC BY-SA 3.0This is so subtle: We’re talking 1% opacity. Get your squint on!
Source Atle Mo
Metal Grid Pattern #1091
Metal CC BY-SA 3.0A repeatable image with dark background and metal grid pattern.
Source V. Hartikainen
Tileable Off-white Background #1191
Concrete CC BY-SA 3.0A free tileable background colored in off-white (antique white) color.
Source V. Hartikainen
Fabric of Squares@2X #1096
Light CC BY-SA 3.0As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
Background pattern yellow #1999
Yellow CC 0Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
White Wall 2 #1020
Wall CC BY-SA 3.0A new one called white wall, not by me this time.
Source Yuji Honzawa
Paper Fibers #1060
Paper CC BY-SA 3.0Just what the name says, paper fibers. Always good to have.
Source Heliodor jalba
Prismatic Polyskelion Pattern No Background@2X #800
Light CC 0Prismatic Polyskelion Pattern No Background
Source GDJ
Black Linen 2 #103
Dark CC BY-SA 3.0A new take on the black linen pattern. Softer this time.
Source Atle Mo
Blizzard #663
Paper CC BY-SA 3.0This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
Tessellation 15 (colour 3) #2220
Red CC 0The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Stripy checkerboard pattern #1768
Dark CC 0Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
Sativa #1306
Dark CC BY-SA 3.0Honestly, who does not like a little pipe and mustache?
Source Luca Errico
Robots@2X #126
Dark CC BY-SA 3.0And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio
White Bed Sheet #821
Light CC BY-SA 3.0Nothing like a clean set of bed sheets, huh?
Source Badhon Ebrahim
Flower 193 #1794
Green CC 0From a drawing in 'Prose and Verse ', William Linton, 1836.
Source Firkin
Prismatic Abstract Geometric Background 4 No Black@2X #443
Dark CC 0Prismatic Abstract Geometric Background 4
Source GDJ
Psychedelic@2X #746
Gray CC BY-SA 3.0Geometric triangles seem to be quite hot these days.
Source Pixeden
Wavy background #2021
Pink CC 0CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Background pattern 258 #2135
Dark CC 0Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.
Source Firkin