Gray Lines@2X #914
Light CC BY-SA 3.0Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
More Textures
Low Contrast Linen #863
Dark CC BY-SA 3.0A smooth mid-tone gray, or low contrast if you will, linen pattern.
Source Jordan Pittman
Background pattern 105@2X #564
Dark CC 0A seamless pattern formed from background pattern 102
Source Firkin
Background pattern 223 (colour 5) #2349
Blue CC 0Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Background pattern 221 #2347
Dark CC 0A seamless pattern formed from a tile made from ornament 22. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Background pattern 306 (colour 5) #1879
Colorful CC 0Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Batthern #324
Grid CC BY-SA 3.0Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
Decorative divider 245 #2079
Dark CC 0From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Blue on White Background Pattern #993
Stripes CC BY-SA 3.0A background pattern with blue on white vertical stripes.
Source V. Hartikainen
Geometric pattern #2004
Grid CC 0A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
Background pattern 336 (colour 2) #1720
Green CC 0Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
MBossed #193
Grid CC BY-SA 3.0Embossed lines and squares with subtle highlights.
Source Alex Parker
Subtle Striped Brown Background Pattern #940
Stripes CC BY-SA 3.0Here's a brown background pattern with subtle stripes. I hope you'll like the color. If not, feel free to change it using an image editor, if you know how of course. Personally, I'm using GIMP to create these backgrounds.
Source V. Hartikainen
Gray Textile Background #1168
Fabric CC BY-SA 3.0A gray background pattern with a texture of textile. Suits perfectly for web design.
Source V. Hartikainen
Swirl@2X #948
Light CC BY-SA 3.0The name tells you it has curves. Oh yes, it does!
Source Peter Chon
White Brick Wall #593
Wall CC BY-SA 3.0If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra
Wavy background #2018
Colorful CC 0CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Prismatic Groovy Concentric Background 2 #453
Noise CC 0Prismatic Groovy Concentric Background 2
Source GDJ
Colourful background #2009
Colorful CC 0Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Prismatic Abstract Geometric Background 5 #401
Noise CC 0Prismatic Abstract Geometric Background 5
Source GDJ