Wavy background #2020
Green CC 0CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
More Textures
Red Gemstone Tiles #1223
Red CC BY-SA 3.0This tiled background comes in red and consists of tiles that look like gemstones. It is more for blogs or social profiles, I think.
Source V. Hartikainen
Fence 7 #2576
Wood CC 0A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Background pattern 246 (colour 3) #2184
Green CC 0This was formed by distorting an image of a background on Pixabay.
Source Firkin
Pineapple Cut #583
Diamond CC BY-SA 3.0I love the movie Pineapple Express, and I’m also liking this Pineapple right here.
Source Audee Mirza
Noisy #45
Paper CC BY-SA 3.0Looks a bit like concrete with subtle specks spread around the pattern.
Source Mladjan Antic
"Beige Stone", Seamless Web Texture #1031
Stone CC BY-SA 3.0It looks like a polished stone surface to me. Download it for free, as always.
Source V. Hartikainen
Page ornament #1991
Dark CC 0From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Floral pattern 6 (colour 2) #2460
Fabric CC 0Alternative colour scheme for the original floral pattern.
Source Firkin
Stamped Dots On Metal #1083
Metal CC BY-SA 3.0A dark metallic background with a pattern of stamped dots. Here's a dark "metallic" background pattern for you.
Source V. Hartikainen
Spiral background 2 #2245
Colorful CC 0Remixed from a raster on Pixabay, that was uploaded by ArtsyBee.
Source Firkin
Debut Dark@2X #1015
Dark CC BY-SA 3.0Same classic 45-degree pattern, dark version.
Source Luke McDonald
Wild Flowers #1181
Gray CC BY-SA 3.0Tiny little flowers growing on your screen. Nice, huh?
Source Themes Tube
Vertical Cloth #597
Dark CC BY-SA 3.0You just can’t get enough of the fabric patterns, so here is one more for your collection.
Source Krisp Designs
Abstract Water Texture (Seamless) #890
Water CC BY-SA 3.0An abstract texture of water. It's not perfect, but will do. You may download if you like it.
Source V. Hartikainen
Decorative divider 282 #1857
Dark CC 0From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
Prismatic Geometric Tessellation Pattern 3 No Background #555
Noise CC 0Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ
Escheresque #777
Light CC BY-SA 3.0Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
Dark Denim #372
Dark CC BY-SA 3.0Thin lines, noise and texture creates this crisp dark denim pattern.
Source Marco Slooten
Background pattern 298 #1899
Dark CC 0To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin