This is the remix of "Colorful Floral Pattern Background 3" uploaded by "GDJ". Thanks.
Source Yamachem
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Like the name suggests, this background image consists of a pattern of dark bricks. It may be an option for you, if you are looking for something that looks like a brick wall for use as a background on web pages. It's not a masterpiece, but looks pretty nice when is tiled.
Source V. Hartikainen
As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
Prismatic Curved Diamond Pattern 3 No Background
Source GDJ
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
Tile available in Inkscape using shift-alt-i on the selected rectangle
Source Firkin
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
A light gray wall or floor (you decide) of concrete.
Source Atle Mo
A bit simplified version. Although it could be edited out to be simpler. Anyway, this time the tiling is converted to a pattern fill -which is using clipping for the tile's edges.
Source Lazur URH
From a drawing in 'Hubert Montreuil, or the Huguenot and the Dragoon', Francisca Ouvry, 1873.
Source Firkin
Sort of like the back of a wooden board. Light, subtle, and stylish, just the way we like it!
Source Nikolalek
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Remixed from a drawing in 'Line and form", Walter Crane, 1914.
Source Firkin
Background formed from the iconic plastic construction bricks that gave me endless hours of fun when I was a lad.
Source Firkin
Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin
Smooth Polaroid pattern with a light blue tint.
Source Daniel Beaton
A simple but elegant classic. Every collection needs one of these.
Source Christopher Burton
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i
Source Firkin
This seamless background image should look nice on websites. It has a dark blue gray texture with vertical stripes, it tiles seamlessly and, like all of the background images here, it's free. So, if you like it, take it!
Source V. Hartikainen
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
A slightly grainy paper pattern with small horizontal and vertical strokes.
Source Atle Mo
One more sharp little tile for you. Subtle circles this time.
Source Blunia
I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.