"Black Groove Stripes", Repeating Background #971
Stripes CC BY-SA 3.0A repeating background for websites with a texture of black groove stripes.
Source V. Hartikainen
More Textures
Blue Stripes Pattern #969
Stripes CC BY-SA 3.0A textured blue background pattern with vertical stripes.
Source V. Hartikainen
Prismatic Hexagonalism Pattern No Background@2X #803
Light CC 0Prismatic Hexagonalism Pattern No Background
Source GDJ
Retro Intro #893
Gray CC BY-SA 3.0A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
Batthern #324
Grid CC BY-SA 3.0Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
Background pattern 197 (variant 2) #2512
Green CC 0A version without colours blended together to give a different look.
Source Firkin
Decorative divider 277 #1906
Colorful CC 0Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Embossed Paper@2X #732
Paper CC BY-SA 3.0One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
Aged Grid Paper Background #1072
Paper CC BY-SA 3.0A seamless web background with texture of aged grid paper.
Source V. Hartikainen
Background pattern 215 (colour 3) #2369
Pink CC 0A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Background pattern pink #1954
Pink CC 0To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Leafy pattern 12 (colour 2) #1761
Red CC 0From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Prismatic Groovy Concentric Background 4 No Black #463
Noise CC 0Prismatic Groovy Concentric Background 4 No Black
Source GDJ
Prismatic Hypnotic Pattern No Background #571
Noise CC 0Prismatic Hypnotic Pattern No Background
Source GDJ
Textured Grid Paper #1316
Orange CC BY-SA 3.0A tile-able background for websites with paper-like texture and a grid pattern layered on top of it.
Source V. Hartikainen
Floral design 91 #1814
Dark CC 0From a drawing in 'Hubert Montreuil, or the Huguenot and the Dragoon', Francisca Ouvry, 1873.
Source Firkin
Background pattern 336 (colour 3) #1719
Blue 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
Moss #1290
Wall CC 0ZeroCC tileable moss texture, photographed and made by me. CC0
Source Sojan Janso
Medic Packaging Foil #376
Light CC BY-SA 3.08 by 8 pixels, and just what the title says.
Source pixilated
Background pattern 323 #1807
Red CC 0Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
Seamless Blue On Yellow Background #1160
Grid CC BY-SA 3.0This seamless pattern consists of a blue grid on a yellow background.
Source V. Hartikainen
Black Wall #1262
Wall CC 0Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso