A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
A seamless texture of a rough concrete surface.
Source V. Hartikainen
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Light gray paper pattern with small traces of fiber and some dust.
Source Atle Mo
ZeroCC tileable stone texture, edited from pixabay. CC0
Source Sojan Janso
Number 1 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Subtle scratches on a light gray background.
Source Andrey Ovcharov
From a drawing in 'Two Women in the Klondike', Mary Hitchcock, 1899.
Source Firkin
Tile available in Inkscape using shift-alt-i on the selected rectangle
Source Firkin
Brushed aluminum, in a bright gray version. Lovely 2X as well.
Source Andre Schouten
Psychedelic Geometric Background No Black
Source GDJ
With a name like this, it has to be hot. Diagonal lines in light shades.
Source Isaac
From a drawing in 'Uit de geschiedenis der Heilige Stede te Amsterdam', Yohannes Sterck, 1898.
Source Firkin
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
Prismatic Geometric Tessellation Pattern 2 No Background
Source GDJ
A nice and simple white rotated tile pattern.
Source Another One
Sharp diamond pattern. A small 24x18px tile.
Source Tom Neal
Abstract Ellipses Background Grayscale
Source GDJ
Zero CC tillable hard cover red book with X shape marks. Scanned and made by me.
Source Sojan Janso