CC0 remixed from a drawing. Walter Crane, 1914, Firkin.
Source SliverKnight
Dark, crisp and subtle. Tiny black lines on top of some noise.
Source Wilmotte Bastien
Black brick wall pattern. Brick your site up!
Source Alex Parker
ZeroCC tileable mossy (lichen) stone texture, edited from pixabay. CC0
Source Sojan Janso
Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
This white background pattern has a seamless grunge style texture. Here's a white grunge style background pattern. Use it as a tiled background image on web sites or for other purposes.
Source V. Hartikainen
A seamless pattern formed from a modified version of rwwgub's tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Original minus the background
Source Firkin
A simple but elegant classic. Every collection needs one of these.
Source Christopher Burton
Has nothing to do with toast, but it’s nice and subtle.
Source Pippin Lee
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
Prismatic Curved Diamond Pattern 4 No Background
Source GDJ
Prismatic Geometric Tessellation Pattern No Background
Source GDJ
Thin lines, noise and texture creates this crisp dark denim pattern.
Source Marco Slooten
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
This light background pattern has a texture of "frozen" surface with diagonal stripes. Here's an yet another addition to the collection of free website backgrounds.
Source V. Hartikainen
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin