Wavy background #2020
Green CC 0CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
More Textures
Leafy pattern 11 #1765
Dark CC 0From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
blocky filter pack 2 #158
Noise CC 0Wasn't satisfied with the original's colouring. Too much component transfer and colormatrixes yet the results are lacking a bit. So this time it is a simple black to transparent fade, making it possible remixing easily once there will be other blending modes supported as well. Probably in inkscape 0.92.
Source Lazur URH
Background pattern 245 (colour 3) #2190
Blue CC 0This was formed by distorting an image of a background on Pixabay.
Source Firkin
Background pattern 226 (colour 2) #2320
Green CC 0A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Sports car pattern #2442
Red CC 0A seamless pattern formed from a sports car on clker.com. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Knitted Sweater@2X #1098
Light CC BY-SA 3.0Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
Prismatic Groovy Concentric Background 4 No Black@2X #464
Noise CC 0Prismatic Groovy Concentric Background 4 No Black
Source GDJ
Fabric pattern 2 (colour 5) #2392
Fabric CC 0Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Background pattern 272 (colour 2) #2056
Pink CC 0A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Pinstriped Suit #665
Dark CC BY-SA 3.0Just like your old suit, all striped and smooth.
Source Alex Berkowitz
Wall #1239
Stone CC 0Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Background pattern 200 variant #2505
Pink CC 0A version without colours blended together to give a different look.
Source Firkin
Diamonds Are Forever #183
Diamond CC BY-SA 3.0Sharp diamond pattern. A small 24x18px tile.
Source Tom Neal
Prismatic Geometric Pattern Variation 2 With Background #471
Noise CC 0Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
Leopard Skin Pattern #1120
Leather CC BY-SA 3.0A seamless pattern of leopard skin. It should look nice as a background element on web pages.
Source V. Hartikainen
Green Web Background, Seamless tile #1332
Green CC BY-SA 3.0Green Web Background, Seamless tile.
Source V. Hartikainen
Gloomy Stripes #994
Stripes CC BY-SA 3.0A dark striped seamless pattern suitable for use as a background on websites.
Source V. Hartikainen
Paper 2@2X #22
Paper CC BY-SA 3.0New paper pattern with a slightly organic feel to it, using some thin threads.
Source Atle Mo
Bark #1291
Wall CC 0Zero CC tileable bark texture, photographed and made by me. CC0
Source Sojan Janso
Grid Me #605
Grid CC BY-SA 3.0Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian
"Gray Stripes", Background Pattern #941
Stripes CC BY-SA 3.0This one is quite simple in design, it consists of vertical stripes layered on top of a seamless texture.
Source V. Hartikainen