Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
If you need a green background for your blog/website, try this one. Remember that Green Striped Background is seamlessly tileable.
Source V. Hartikainen
From a design in 'Storia del Palazzo Vecchio in Firenze', Aurelio Gotti, 1889.
Source Firkin
The image depicts a seamless pattern made using a bird's face.
Source Yamachem
It looks very nice I think.
Source V. Hartikainen
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
Prismatic Rounded Squares Grid 3 No Background
Source GDJ
Not a flat you live inside, like in the UK – but a flat piece of cardboard.
Source Appleshadow
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
Prismatic Polka Dots Mark II 3 No Background
Source GDJ
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Clean and crisp lines all over the place. Wrap it up with this one.
Source Dax Kieran
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
U.S.-based National Fire Protection Association standard fire diamond for flagging risks posed by hazardous materials. The red diamond has a number 0-4 depending on flammability. The blue diamond has a number 0-4 depending on health hazard. The yellow has a number 0-4 depending on reactivity. the white square has a special notice, e.g OX for oxidizer.
Source Firkin
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
Green Web Background, Seamless tile.
Source V. Hartikainen
This white background pattern has a seamless grunge style texture. Here's a white grunge style background pattern. Use it as a tiled background image on web sites or for other purposes.
Source V. Hartikainen
Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
I love the movie Pineapple Express, and I’m also liking this Pineapple right here.
Source Audee Mirza
Kaleidoscope Prismatic Abstract No Background
Source GDJ
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
Remixed from a drawing that was uploaded to Pixabay by DavidZydd
Source Firkin
And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio
Alternative colour scheme for the original floral pattern.
Source Firkin
Subtle scratches on a light gray background.
Source Andrey Ovcharov
This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor