From a drawing in 'Prose and Verse ', William Linton, 1836.
Source Firkin
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Derived from an image that was uploaded to Pixabay by pugmom40
Source Firkin
Super detailed 16×16 tile that forms a beautiful pattern of straws.
Source Pavel
Greyscale version of a pattern that came out of playing with the 'slinky' plug-in for Paint.net
Source Firkin
A seamless background pattern of dark brown wood planks.
Source V. Hartikainen
Adapted from an image that was uploaded to Pixabay by Anerma.
Source Firkin
Prismatic Curved Diamond Pattern 4 No Background
Source GDJ
Prismatic Snowflakes Pattern No Background
Source GDJ
Zero CC tileable bark texture, photographed and made by me. CC0
Source Sojan Janso
Bumps, highlight and shadows – all good things.
Source Badhon Ebrahim
Geometric triangles seem to be quite hot these days.
Source Pixeden
There are many carbon patterns, but this one is tiny.
Source Designova
The image depicts polka dot seamless pattern.
Source Yamachem
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
Tiny circle waves, almost like the ocean.
Source Sagive
Zero CC tileable hard cover green book, scanned and made by me. CC0
Source Sojan Janso
A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green