Checkered Light Emboss #280
Grid CC BY-SA 3.0Sort of like the Photoshop transparent background, but better!
Source Alex Parker
More Textures
Background pattern 309 (colour 2) #1865
Blue CC 0Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Green Background Pattern with Warped Vertical Stripes #1328
Green CC BY-SA 3.0Green Background Pattern
Source V. Hartikainen
Wavy background #2019
Colorful CC 0CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
White Well & Fissure #1701
Wall CC 0Background Wall, Art Abstract, white Well & CC0 texture.
Source Ractapopulous
GPlay@2X #736
Light CC BY-SA 3.0A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
Gray Striped Background #906
Stripes CC BY-SA 3.0Here's a bluish gray striped background pattern for use on web sites.
Source V. Hartikainen
Paper 1 #15
Paper CC BY-SA 3.0A slightly grainy paper pattern with small horizontal and vertical strokes.
Source Atle Mo
Background pattern 29 #200
Dark CC 0Pattern produced in Paint.net using the Vibrato plug-in.
Source Firkin
Metal Grid Pattern #1091
Metal CC BY-SA 3.0A repeatable image with dark background and metal grid pattern.
Source V. Hartikainen
Prismatic Abstract Geometric Background 4 No Black #441
Dark CC 0Prismatic Abstract Geometric Background 4 No Black
Source GDJ
Wood Background Pattern #882
Wood CC BY-SA 3.0A seamless background pattern with a texture of wood planks. This wood background pattern has vertically arranged planks. You may try to rotate it 90°, to see how it will look like when the wood planks are arranged horizontally.
Source V. Hartikainen
Floral pattern 6 (colour 4) #2458
Fabric CC 0Alternative colour scheme for the original floral pattern.
Source Firkin
Lined Paper #362
Stripes CC BY-SA 3.0The classic notebook paper with horizontal stripes.
Source Are Sundnes
Iron Grip@2X #588
Dark CC BY-SA 3.0Sounds like something from World of Warcraft. Has to be good.
Source Tony Kinard
Background pattern 225 #2327
Colorful CC 0Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Wild Flowers #1181
Gray CC BY-SA 3.0Tiny little flowers growing on your screen. Nice, huh?
Source Themes Tube
Background pattern 275 #2033
Blue CC 0Drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Hexellence #705
Light CC BY-SA 3.0Detailed but still subtle and quite original. Lovely gray shades.
Source Kim Ruddock
Candy cane pattern #1853
Noise CC 0Remixed from a PNG that was uploaded to Pixabay by k_jprather
Source Firkin
Smooth Wall@2X #28
Light CC BY-SA 3.0Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
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
Mooning #1140
Gray CC BY-SA 3.0The classic subtle pattern. Sort of wall/brick looking. Or moon-looking?
Source Joel Klein
Dark Fish Skin #1048
Dark CC BY-SA 3.0It almost looks a bit blurry, but then again, so are fishes.
Source Petr Šulc