This was formed by distorting an image of a background on Pixabay.
Source Firkin
Beautiful dark noise pattern with some dust and grunge.
Source Vincent Klaiber
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
It’s an egg, in the form of a pattern. This really is 2012.
Source Paul Phönixweiß
Green Web Background, Seamless tile.
Source V. Hartikainen
A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Prismatic Curved Diamond Pattern 5 No Background
Source GDJ
One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
Zero CC tileable bark texture, photographed and made by me. CC0
Source Sojan Janso
Basket Fibers, Basket Texture, Braid Background style CC0 texture.
Source 1A-Photoshop
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
A version without colours blended together to give a different look.
Source Firkin
Classic vertical lines, in all its subtlety.
Source Cody L
Heavy depth and shadows here, but might work well on some mobile apps.
Source Damian Rivas
An alternative colour scheme to the original seamless pattern.
Source Firkin
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
Zero CC tileable hard cover cells, skin like, book texture. 4K, Scanned and made by me CC0
Source Sojan Janso
A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin