The image depicts a shell seamless pattern.I used an OCAL clipart called "Shell" uploaded by "jgm104".Thanks.
Source Yamachem
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
Used in small doses, this could be a nice subtle pattern. Used on a large surface, it’s dirty!
Source Paul Reulat
The Grid. A digital frontier. I tried to picture clusters of information as they traveled through the computer.
Source Haris Šumić
Prismatic Geometric Tessellation Pattern 2 No Background
Source GDJ
White handmade paper pattern with small bumps.
Source Marquis
Inspired by a design found in 'Konstantinápolyi emlékeim', Miklos Chriszto, 1893.
Source Firkin
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
No relation to the band, but damn it’s subtle!
Source Thomas Myrman
Seamless Olive Green Web Background Image
Source V. Hartikainen
Tiny, tiny 3D cubes. Reminds me of the good old pattern from k10k.
Source Etienne Rallion
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
Zero CC Mossy stone tileable texture, photographed and made by me. CC0
Source Sojan Janso
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
Continuing the geometric trend, here is one more.
Source Mike Warner
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
Prismatic Groovy Concentric Background 4
Source GDJ
Remixed from an image on Pixabay, the original having been uploaded by darkmoon1968.
Source Firkin
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
A white version of the very popular linen pattern.
Source Ant Ekşiler
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
A simple bump filter made upon request at irc #inkscape at freenode. Made a screen capture of the making here: https://youtu.be/TGAWYKVLxQw
Source Lazur URH
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers