The first pattern on here using opacity. Try it on a site with a colored background, or even using mixed colors.
Source Nathan Spady
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Tiny little flowers growing on your screen. Nice, huh?
Source Themes Tube
Floral patterns will never go out of style, so enjoy this one.
Source Lasma
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Hexagonalist Pattern No Background
Source GDJ
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
Background Wall, Art Abstract, Star Well & CC0 texture.
Source Ractapopulous
Prismatic Curved Diamond Pattern No Background
Source GDJ
A seamless canvas texture for using as background on websites. Colored in pale tones of brown.
Source V. Hartikainen
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Prismatic Polka Dots 3 No Background
Source GDJ
The image is the remix of "wire-mesh fence seamless pattern" .This is a more minute version of it.Sorry for the file size.Using path>difference in Inkscape, I will cut out any silhouette from this pattern and create a "meshed silhouette".
Source Yamachem
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
Zero CC tileable hard cover green book, scanned and made by me. CC0
Source Sojan Janso
Paper pattern with small dust particles and 45-degree strokes.
Source Atle Mo
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Can’t believe we don’t have this in the collection already! Slick woven pattern with crisp details.
Source Max Rudberg