A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
A seamless pattern recreated from an image on Pixabay. It is reminiscent of parquet flooring and is formed from a square tile, which can be recovered in Inkscape by selecting the ungrouped rectangle and using shift-alt-I together.
Source Firkin
A seamlessly tileable pink background texture.
Source V. Hartikainen
Geometric triangles seem to be quite hot these days.
Source Pixeden
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Awesome name, great pattern. Who does not love space?
Source Nick Batchelor
Derived from an image that was uploaded to Pixabay by pugmom40
Source Firkin