This is a seamless pattern which is derived from a flower petal image.
Source Yamachem
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
Feel free to download this "Dark Wood" background texture for your web site. The background tiles seamlessly!
Source V. Hartikainen
Zero CC tileable dry grass texture, photographed and made by me. CC0
Source Sojan Janso
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian
Not the Rebel alliance, but a dark textured pattern.
Source Hendrik Lammers
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
Nicely crafted paper pattern, although a bit on the large side (500x593px).
Source Blaq Annabiosis
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Classic vertical lines, in all its subtlety.
Source Cody L
Dark, square, clean and tidy. What more can you ask for?
Source Jaromír Kavan
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
The classic subtle pattern. Sort of wall/brick looking. Or moon-looking?
Source Joel Klein
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian
From a drawing in 'Kingsdene', Maria Fetherstonehaugh, 1878.
Source Firkin
A slightly grainy paper pattern with small horizontal and vertical strokes.
Source Atle Mo
From a drawing in 'Storia del Palazzo Vecchio in Firenze', Aurelio Gotti, 1889.
Source Firkin
The image depicts an edo-era pattern called "same-komon" or "鮫小紋"which looks like a shark skin.The "same" in Japanese means shark in English.
Source Yamachem