A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
Zero CC tileable hard cover cells book texture, 4k, scanned and made by me. CC0
Source Sojan Janso
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Fix and cc0 to get the tile this is based on.
Source SliverKnight
A background formed from an image of an old tile on the New York Metropolitan Museum of Art website. To get the base tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
With a name this awesome, how can I go wrong?
Source Nikolay Boltachev
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Here's a subtle marble-like background for use on websites.
Source V. Hartikainen
Sort of reminds me of those old house wallpapers.
Source Tish
Prismatic Curved Diamond Pattern 8 No Background
Source GDJ
Light and tiny, just the way you like it.
Source Rohit Arun Rao
From a drawing in 'Kingsdene', Maria Fetherstonehaugh, 1878.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A free web background image with a seamless concrete-like texture and an Indian-red color.
Source V. Hartikainen
A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
A repeating gloomy background image. This one consists of a pattern of black chains layered on top of a dark textured background.
Source V. Hartikainen
To celebrate the new feature, we need some sparkling diamonds.
Source Atle Mo
The image depicts a seamless pattern of a Japanese family crest called "chidori" in Japanese .A chidori in Japanese means a plover in English.
Source Yamachem
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
Prismatic Basic Pattern 2 No Background
Source GDJ