Non-seamless pattern drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
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
ZeroCC tileabel stone granite texture, edited from pixabay. CC0
Source Sojan Janso
Nothing like a clean set of bed sheets, huh?
Source Badhon Ebrahim
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Prismatic Abstract Geometric Background 4
Source GDJ
Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Fix and cc0 to get the tile this is based on.
Source SliverKnight
Light and tiny, just the way you like it.
Source Rohit Arun Rao
ZeroCC tileable stone texture, edited from pixabay. CC0
Source Sojan Janso
This is the remix of an OCAL clipart called "Rain on Window" uploaded by "pagarmidna".Thanks.This is a seamless pattern of raindrops.
Source Yamachem
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
Sort of like the back of a wooden board. Light, subtle, and stylish, just the way we like it!
Source Nikolalek
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
Prismatic Geometric Tessellation Pattern 2 No Background
Source GDJ
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
From a drawing in 'Friend or Fortune? The story of a strange year', Robert Overton, 1897.
Source Firkin