A seamless pattern based on a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
You know I’m a sucker for these. Well-crafted paper pattern.
Source Mihaela Hinayon
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
Sharp diamond pattern. A small 24x18px tile.
Source Tom Neal
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
Embossed lines and squares with subtle highlights.
Source Alex Parker
This was formed by distorting an image of a background on Pixabay.
Source Firkin
A rusty grunge background for websites. Feel free to use it in your site's theme.
Source V. Hartikainen
A free seamless background texture that looks like a brown stone wall.
Source V. Hartikainen
Clean and crisp lines all over the place. Wrap it up with this one.
Source Dax Kieran
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
Zero CC tileable brick texture, photographed and made by me. CC0
Source Sojan Janso
Did anyone say The Hoff? This pattern is in no way related to Baywatch.
Source Josh Green
Zero CC tileable hard cover cells, skin like, book texture. 4K, Scanned and made by me CC0
Source Sojan Janso
I love the movie Pineapple Express, and I’m also liking this Pineapple right here.
Source Audee Mirza
Because I love dark patterns, here is Brushed Alum in a dark coating.
Source Tim Ward
By popular request, an outline version of the pentagon pattern.
Source Atle Mo
A seamless pattern formed from background pattern 102
Source Firkin
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
This one resembles a black concrete wall when is tiled. It should look great, at least with dark website themes.
Source V. Hartikainen