Zig-zag pattern 4 #2415
Grid CC 0A seamless pattern based on a rectangular tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
More Textures
"Honeycomb", Orange Background Pattern #1313
Orange CC BY-SA 3.0The following orange background pattern resembles a honeycomb.
Source V. Hartikainen
Tessellation 10 (variant 2) #2544
Grid CC 0An alternative colour scheme to the original seamless pattern.
Source Firkin
Skin Side Up@2X #848
Light CC BY-SA 3.0White fabric looking texture with some nice random wave features.
Source Hendrik Lammers
Wavy background #2018
Colorful CC 0CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Background pattern brown #1945
Brown CC 0To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
WaveCut@2X #76
Light CC BY-SA 3.0If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
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
Vintage pattern #1961
Grid CC 0Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
Woody texture-seamless pattern 03 #2543
Wood CC 0This is a seamless pattern of a woody texture.The original image is here:https://pixabay.com/ja/users/ClassicallyPrinted-1302233/
Source Yamachem
Leafy pattern 11 #1765
Dark CC 0From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Graphy #350
Grid CC BY-SA 3.0Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
Background pattern 256 (colour) #2138
Red CC 0Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
60º lines@2X #26
Light CC BY-SA 3.0Never out of fashion and so much hotter than the 45º everyone knows, here is a sweet 60º line pattern.
Source Atle Mo
Clean gray paper@2X #860
Paper CC BY-SA 3.0On a large canvas you can see it tiling, but used on smaller areas, it’s beautiful.
Source Paul Phönixweiß
Paven@2X #297
Grid CC BY-SA 3.0A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green
Psychedelic #745
Gray CC BY-SA 3.0Geometric triangles seem to be quite hot these days.
Source Pixeden
Carpet seamless texture 3 #2553
Wall CC 0From an image on opengameart.org shared by rubberduck.
Source Firkin
Gold Triangular Seamless Pattern No Background #272
Light CC 0Gold Triangular Seamless Pattern No Background
Source GDJ