A seamless pattern formed from cross 4. To get the original tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Alternative colour scheme.
Source Firkin
You know, tiny and sharp. I’m sure you’ll find a use for it.
Source Atle Mo
A seamless tessellation pattern. To get the tile this is formed from, select the pattern in Inkscape and use shift+alt+i.
Source Firkin
Light honeycomb pattern made up of the classic hexagon shape.
Source Federica Pelzel
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
From a drawing in 'An Old Maid's Love. A Dutch tale told in English', Maarten Maartens, 1891.
Source Firkin
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
Remixed from a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
A browner version of the original weathered fence texture.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
The first pattern on here using opacity. Try it on a site with a colored background, or even using mixed colors.
Source Nathan Spady
No idea what Nistri means, but it’s a crisp little pattern nonetheless.
Source Markus Reiter
A seamless web background with texture of aged grid paper.
Source V. Hartikainen
The tile for this is based on a repeating unit close to a design on Pixabay. It can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Zero CC tileable hard cover green book, scanned and made by me. CC0
Source Sojan Janso
Prismatic Isometric Cube Extra Pattern No Background
Source GDJ
A comeback for you: the popular Escheresque, now in black.
Source Patten