Never out of fashion and so much hotter than the 45º everyone knows, here is a sweet 60º line pattern.
Source Atle Mo
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Prismatic Curved Diamond Pattern 5 No Background
Source GDJ
Prismatic Geometric Pattern Background 2 No Black
Source GDJ
Prismatic Geometric Pattern Background No Black
Source GDJ
Background formed from the original with an emboss effect
Source GDJ
Classic 45-degree pattern, light version.
Source Luke McDonald
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
To get the tile this is made up from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Seamless Olive Green Web Background Image
Source V. Hartikainen
The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
Number 2 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
More in the paper realm, this time with fibers.
Source Jorge Fuentes
I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
A seamlessly tile-able grunge background image.
Source V. Hartikainen
Prismatic Groovy Concentric Background 4 No Black
Source GDJ
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz
Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin