The image depicts a seamless pattern of a fishnet with a plenty of fish.It may be a lucky charm for fishermen.
Source Yamachem
Used in small doses, this could be a nice subtle pattern. Used on a large surface, it’s dirty!
Source Paul Reulat
A free repetitive background with a dark concrete wall like texture. This one may be used in dark web site designs.
Source V. Hartikainen
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
From a drawing in 'Cassell's Library of English Literature', Henry Morley, 1883.
Source Firkin
A seamless pattern formed from a sports car on clker.com. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
Clover with background for St. Patrick's Day. Add to a card with a doily, ribbon, a leprechaun or other embellishments.
Source BAJ
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Sharp pixel pattern, just like the good old days.
Source Paridhi
Prismatic Polka Dots Mark II 3 No Background
Source GDJ
A seamless pattern made from the gold Penrose triangle by GDJ and the two remixes
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
White handmade paper pattern with small bumps.
Source Marquis
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
Here's a new paper-like background for free use on personal and commercial projects (this applies to all background patterns here).
Source V. Hartikainen
From a drawing in 'Cowdray: the history of a great English House', Julia Roundell, 1884.
Source Firkin
One can never have too few rice paper patterns, so here is one more.
Source Atle Mo
Zero CC Mossy stone tileable texture, photographed and made by me. CC0
Source Sojan Janso
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev