The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
Number 5 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
A rusty grunge background for websites. Feel free to use it in your site's theme.
Source V. Hartikainen
A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
Luxury pattern, looking like it came right out of Paris.
Source Daniel Beaton
A simple but elegant classic. Every collection needs one of these.
Source Christopher Burton
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
This background pattern looks like bamboo to me. Feel free to download it for your website (for your blog perhaps?).
Source V. Hartikainen
A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Heavy depth and shadows here, but might work well on some mobile apps.
Source Damian Rivas
Derived from an image that was uploaded to Pixabay by Kaz
Source Firkin
Prismatic Hexagonalist Pattern No Background
Source GDJ
Derived from a drawing in 'Historiske Afhandlinger', Adolf Jorgensen, 1898.
Source Firkin
Pattern that came out of playing with the 'slinky' plug-in for Paint.net
Source Firkin
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian