Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
The tile can be had by using shift+alt+i on the selected rectangle in Inkscape
Source Firkin
The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
Seamless Prismatic Pythagorean Line Art Pattern No Background. A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
This is the remix of "Tileable Wave Pattern 2" uploaded by "Arvin61r58".Thanks.I added a wire-mesh fence seamless pattern as a lower layer.
Source Yamachem
Remixed from a drawing in 'Line and form", Walter Crane, 1914.
Source Firkin
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Prismatic Geometric Tessellation Pattern 2 No Background
Source GDJ
Scanned some rice paper and tiled it up for you. Enjoy.
Source Atle Mo
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
White circles connecting on a light gray background.
Source Mark Collins
I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
A new take on the black linen pattern. Softer this time.
Source Atle Mo
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
Sharp pixel pattern, just like the good old days.
Source Paridhi
Clean and crisp lines all over the place. Wrap it up with this one.
Source Dax Kieran
Real snow that tiles, not easy. This is not perfect, but an attempt.
Source Atle Mo
Number 4 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
This beige background pattern resembles a concrete wall with engravings or something similar to it.
Source V. Hartikainen