The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Crossing lines with a subtle emboss effect on a dark background.
Source Stefan Aleksić
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
A browner version of the original weathered fence texture.
Source Firkin
This ladies and gentlemen, is texturetastic! Love it.
Source Adam Pickering
Here's a subtle marble-like background for use on websites.
Source V. Hartikainen
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
Remixed from a drawing in 'A Child of the Age', Francis Adams, 1894.
Source Firkin
Prismatic Groovy Concentric Background
Source GDJ
Pixel by pixel, sharp and clean. Very light pattern with clear lines.
Source M.Ashok
The Grid. A digital frontier. I tried to picture clusters of information as they traveled through the computer.
Source Haris Šumić
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
The file was named striped lens, but hey – Translucent Fibres works too.
Source Angelica
This is a hot one. Small, sharp and unique.
Source GraphicsWall
Tiny little flowers growing on your screen. Nice, huh?
Source Themes Tube
This is so subtle: We’re talking 1% opacity. Get your squint on!
Source Atle Mo
A seamless pattern formed from background pattern 102
Source Firkin
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
New paper pattern with a slightly organic feel to it, using some thin threads.
Source Atle Mo
Colourful background achieved with gradient fills.
Source Firkin
Zero CC tileable wood texture, made by me procedurally in Neo Texture Edit.
Source Sojan Janso
A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ