Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
A seamless pattern formed from background pattern 102
Source Firkin
Tile available in Inkscape using shift-alt-i on the selected rectangle
Source Firkin
Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
Looks as if it's spray painted on the wall. You can be sure that this pattern will seamlessly fill your backgrounds on web pages.
Source V. Hartikainen
Prismatic Isometric Cube Wireframe Pattern No Background
Source GDJ
A fun-looking elastoplast/band-aid pattern. A hint of orange tone in this one.
Source Josh Green
A white version of the very popular linen pattern.
Source Ant Ekşiler
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Dark blue concrete wall with some small dust spots.
Source Atle Mo
A pale yellow background pattern with vertical stripes. The stripes are partially faded. I think this background image turned out pretty well, especially those faded stripes.
Source V. Hartikainen
A light gray background pattern with seamless fabric-like texture and almost unnoticeable stripes.
Source V. Hartikainen
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Derived from an image that was uploaded to Pixabay by TheDigitalArtist
Source Firkin
Used in small doses, this could be a nice subtle pattern. Used on a large surface, it’s dirty!
Source Paul Reulat
Zero CC tileable brick texture, photographed and made by me. CC0
Source Sojan Janso
Fix side and a seamless pattern formed from circles.
Source SliverKnight
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin