The first pattern on here using opacity. Try it on a site with a colored background, or even using mixed colors.
Source Nathan Spady
Remixed from a drawing in 'Canadian forest industries July-December', 1915
Source Firkin
Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
The file was named striped lens, but hey – Translucent Fibres works too.
Source Angelica
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
Derived from an image that was uploaded to Pixabay by starchim01
Source Firkin
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
This texture looks like old leather. It should look great as a background on web pages.
Source V. Hartikainen
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
From a drawing of the coat of arms of the Ottoman Empire on Wikimedia.
Source Firkin
White fabric looking texture with some nice random wave features.
Source Hendrik Lammers
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Dark Tile-able Grunge Texture. I think this texture can be classified as grunge. It's free and seamless, as always.
Source V. Hartikainen
This is a more minute version of "fishnet 01".The image depicts a seamless pattern of a fishnet with a plenty of fish.It may be a lucky charm for fishermen.
Source Yamachem
Remixed from a drawing in 'Works. Popular edition', John Ruskin, 1886.
Source Firkin
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
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
A seamless background colored in pale orange. It has a paper like texture with diagonal grid pattern.
Source V. Hartikainen
A brown seamless wood texture in a form of stripe pattern. The result has turned out pretty well, in my opinion.
Source V. Hartikainen
Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
To celebrate the new feature, we need some sparkling diamonds.
Source Atle Mo