The original enhanced with one of Inkscapes's filters.
Source Firkin
Prismatic Groovy Concentric Background 3 No Black
Source GDJ
Light honeycomb pattern made up of the classic hexagon shape.
Source Federica Pelzel
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Abstract Ellipses Background Grayscale
Source GDJ
"Beige Stone", Tileable Texture.
Source V. Hartikainen
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
Just the symbols of the signs of the zodiac distributed in a chequer board-like pattern
Source Firkin
Prismatic Chevrons Pattern 5 With Background
Source GDJ
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Bit of a strange name on this one, but still nice. Tiny gray square things.
Source Carlos Valdez
A blue background wallpaper for websites. It has a seamless texture with vertical stripes. It looks quite nice not only when using as a tiled background on websites, but also on computer desktops.
Source V. Hartikainen
Stefan is hard at work, this time with a funky pattern of squares.
Source Stefan Aleksić
A black tile-able background with paper-like texture.
Source V. Hartikainen
A pattern drawn in Paint.net and vectorized in Inkscape.
Source Firkin
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Gold Triangular Seamless Pattern No Background
Source GDJ
Seamless tile drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
A dark brown fabric-like background texture with seamless pattern of winding stripes.
Source V. Hartikainen
ZeroCC tileable wood boards texture, photographed and made by me. CC0
Source Sojan Janso