From a drawing in 'Real Sailor-Songs', John Ashton, 1891.
Source Firkin
Same as Silver Scales, but in black. Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Continuing the geometric trend, here is one more.
Source Mike Warner
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Light square grid pattern, great for a “DIY projects” sort of website, maybe?
Source Rafael Almeida
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Clean and crisp lines all over the place. Wrap it up with this one.
Source Dax Kieran
The first pattern on here using opacity. Try it on a site with a colored background, or even using mixed colors.
Source Nathan Spady
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
The name tells you it has curves. Oh yes, it does!
Source Peter Chon
The image depicts a tiled seamless pattern.The tile represents four leaves aligned every 90 ° , which may look like a bird or a dragon .The original leaf design is from a Japanese old book.
Source Yamachem
Zero CC tileable wood texture, made by me procedurally in Neo Texture Edit.
Source Sojan Janso
Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
The image depicts a seamless pattern of a tortoise in tortoiseshell (hexagon).
Source Yamachem
Here's a repeatable texture that resembles a light green concrete wall or something similar.
Source V. Hartikainen
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
A version without colours blended together to give a different look.
Source Firkin