Sharp pixel pattern, just like the good old days.
Source Paridhi
Thin lines, noise and texture creates this crisp dark denim pattern.
Source Marco Slooten
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
Tiny circle waves, almost like the ocean.
Source Sagive
A new one called white wall, not by me this time.
Source Yuji Honzawa
Coming in at 666x666px, this is an evil big pattern, but nice and soft at the same time.
Source Atle Mo
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
Zero CC tileable hard cover green book, scanned and made by me. CC0
Source Sojan Janso
Bright Multicolored Floral Background by Karen Arnold from PDP.
Source GDJ
This one resembles a black concrete wall when is tiled. It should look great, at least with dark website themes.
Source V. Hartikainen
Abstract Stars Geometric Pattern Prismatic No Background
Source GDJ
Remixed from a drawing that was uploaded to Pixabay by DavidZydd
Source Firkin
The name is totally random, but hey, it sounds good.
Source Atle Mo
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 background pattern has futuristic look. So, maybe it could be used on websites or blogs dedicated to video games?!
Source V. Hartikainen
Seamless pattern formed from a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Not so subtle. These tileable wood patterns are very useful.
Source Elemis
Psychedelic Geometric Background No Black
Source GDJ
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A free tileable background colored in off-white (antique white) color.
Source V. Hartikainen
Hey, you never know when you’ll need a bird pattern, right?
Source Pete Fecteau