A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin
A free web background image with a seamless concrete-like texture and an Indian-red color.
Source V. Hartikainen
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Floral patterns will never go out of style, so enjoy this one.
Source Lasma
A seamless dark leather-like background texture with diagonal lines that look like stitches.
Source V. Hartikainen
Might not be super subtle, but quite original in its form.
Source Alex Smith
Prismatic Polka Dots Mark II No Background
Source GDJ
Prismatic Curved Diamond Pattern 3 No Background
Source GDJ
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
Zero CC tileable brick texture, photographed and made by me. CC0
Source Sojan Janso
Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek
A seamless texture of an abstract wall colored in shades of light orange brown.
Source V. Hartikainen
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Green Background Pattern
Source V. Hartikainen
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
A simple example on using clones. You can generate a nice base for a pattern fill quickly with it.
Source Lazur URH
Kaleidoscope Prismatic Abstract No Background
Source GDJ
Bright Multicolored Floral Background by Karen Arnold from PDP.
Source GDJ
Detailed but still subtle and quite original. Lovely gray shades.
Source Kim Ruddock
A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
Drawn in Paint.net and vectorised in Vector Magic
Source Firkin