If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
This background pattern contains worn out colorful stripes as a texture.
Source V. Hartikainen
This one needs to be used in small areas; you can see it repeat.
Source Luca
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
A seamlessly tileable pink background texture.
Source V. Hartikainen
The following repeating website background is colored in a blue gray color and resembles a concrete wall or something similar to it.
Source V. Hartikainen
Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
I’m starting to think I have a concrete wall fetish.
Source Atle Mo
Lovely pattern with some good-looking non-random noise lines.
Source Zucx
Crossing lines with a subtle emboss effect on a dark background.
Source Stefan Aleksić
A seamless pattern of leopard skin. It should look nice as a background element on web pages.
Source V. Hartikainen
A heavy dark gray base, some subtle noise and a 45-degree grid makes this look like a pattern with a tactile feel to it.
Source Atle Mo
Background formed from the original with an emboss effect
Source GDJ
I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
I love these crisp, tiny, super subtle patterns.
Source Badhon Ebrahim
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
Prismatic Curved Diamond Pattern 3 No Background
Source GDJ
Number 1 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
The image depicts a seamless pattern of the design which includes a stylized lotus and a stylized crane.I referred to the original image in a book which is into public domain.
Source Yamachem