ZeroCC tileable beechwood wood texture, generated in Neo Texture Edit by me. CC0
Source Sojan Janso
Original minus the background
Source Firkin
There are quite a few grid patterns, but this one is a super tiny grid with some dust for good measure.
Source Dominik Kiss
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
Just the symbols of the signs of the zodiac distributed in a chequer board-like pattern
Source Firkin
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Alternative colour scheme. 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
Prismatic Floral Pattern 3 Variation 3 No Background
Source GDJ
Prismatic Groovy Concentric Background 3 No Black
Source GDJ
This one looks like a cork panel. Feel free to use it as a tiled background on your blog or website.
Source V. Hartikainen
Honestly, who does not like a little pipe and mustache?
Source Luca Errico
This pattern comes in orange, and it looks as if it is "made of glass".
Source V. Hartikainen
Awesome name, great pattern. Who does not love space?
Source Nick Batchelor
A seamless pattern formed from cross 4. To get the original tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
I love these crisp, tiny, super subtle patterns.
Source Badhon Ebrahim
Sort of reminds me of those old house wallpapers.
Source Tish
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Floral patterns might not be the hottest thing right now, but you never know when you need it!
Source Lauren
The file was named striped lens, but hey – Translucent Fibres works too.
Source Angelica
A bit of scratched up grayness. Always good.
Source Dmitry
A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ