It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Medium gray pattern with small strokes to give a weave effect.
Source Catherine
Nice and simple crossed lines in dark gray tones.
Source Stefan Aleksić
A seamless pattern based on a tile that can be achieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
This is a remix of "geometrical pattern 01".
Source Yamachem
A seamless dark leather-like background texture with diagonal lines that look like stitches.
Source V. Hartikainen
Imagine you zoomed in 1000X on some fabric. But then it turned out to be a skeleton!
Source Angelica
This is indeed a bit strange, but here’s to the crazy ones!
Source Christopher Buecheler
A seamless pattern drawn originally in Paint.net by distorting a slice of background pattern 116 and copying the resulting triangle numerous times.
Source Firkin
One more sharp little tile for you. Subtle circles this time.
Source Blunia
Derived from an image that was uploaded to Pixabay by TheDigitalArtist
Source Firkin
Beautiful dark noise pattern with some dust and grunge.
Source Vincent Klaiber
Inspired by a pattern I saw in a 19th century book. This seamless pattern was created from a square tile. To get the tile, select the pattern in Inkscape and use shift+alt+i.
Source Firkin
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
Alternative colour scheme. 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
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo