Did some testing with Repper Pro tonight, and this gray mid-tone pattern came out.
Source Atle Mo
A classic dark tile for a bit of vintage darkness.
Source Listvetra
Derived from an image that was uploaded to Pixabay by Kaz
Source Firkin
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
Prismatic Abstract Geometric Background derived from an image on Pixabay.
Source GDJ
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Derived from a drawing in 'The Murmur of the Shells', Samuel Cowen, 1879.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Prismatic Geometric Tessellation Pattern 4 No Background
Source GDJ
Black brick wall pattern. Brick your site up!
Source Alex Parker
All good things come in threes, so I give you the third in my little concrete wall series.
Source Atle Mo
The image depicts a shell seamless pattern.I used an OCAL clipart called "Shell" uploaded by "jgm104".Thanks.
Source Yamachem
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Number five from the same submitter, makes my job easy.
Source Dima Shiper
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i
Source Firkin