A comeback for you: the popular Escheresque, now in black.
Source Patten
The classic notebook paper with horizontal stripes.
Source Are Sundnes
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
The image depicts a tiled seamless pattern.The tile represents four leaves aligned every 90 ° , which may look like a bird or a dragon .The original leaf design is from a Japanese old book.
Source Yamachem
Prismatic Isometric Cube Wireframe Pattern No Background
Source GDJ
Floral patterns will never go out of style, so enjoy this one.
Source Lasma
Inspired by an image that was uploaded to Pixabay by geralt
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
Prismatic Chevrons Pattern 5 With Background
Source GDJ
With a name this awesome, how can I go wrong?
Source Nikolay Boltachev
The image is a seamless pattern of a fishnet.
Source Yamachem
Remixed from a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
This one is super crisp at 2X. Lined paper with some dust and scratches.
Source HQvectors
Colour version of the original seamless pattern.
Source Firkin
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Tile-able Dark Brown Wood Background. Feel free to use it as a background image in your designs or somewhere on the web. By the way, the color seems to be close to Coffee Brown.
Source V. Hartikainen
Black & white version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Remixed from a drawing in 'An Index to Deering's Nottinghamia Vetus et Nova', Rupert Chicken, 1899. The unit tile can be had by selecting the rectangle in Inkscape and using shift-alt-i
Source Firkin
This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
Light and tiny, just the way you like it.
Source Rohit Arun Rao
Dark Tile-able Grunge Texture. I think this texture can be classified as grunge. It's free and seamless, as always.
Source V. Hartikainen