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
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
This is so subtle: We’re talking 1% opacity. Get your squint on!
Source Atle Mo
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
An aged paper background tile with smeared and pressed text.
Source V. Hartikainen
The image depicts a Japanese Edo pattern called "kanoko or 鹿の子" meaning "fawn" which has a fur with small white spots.
Source Yamachem
A background pattern with green vertical stripes. A new striped background pattern. This time a green one.
Source V. Hartikainen
Prismatic Polka Dots 3 No Background
Source GDJ
This texture looks like old leather. It should look great as a background on web pages.
Source V. Hartikainen
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
I’m not going to use the word Retina for all the new patterns, but it just felt right for this one. Huge wood pattern for ya’ll.
Source Atle Mo
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
ZeroCC tileable mossy (lichen) stone texture, edited from pixabay. CC0
Source Sojan Janso
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
Remixed from a drawing in 'Line and form", Walter Crane, 1914.
Source Firkin
Tile available in Inkscape using shift-alt-i on the selected rectangle
Source Firkin
Did anyone say The Hoff? This pattern is in no way related to Baywatch.
Source Josh Green
Some dark 45 degree angles creating a nice pattern. Huge.
Source Dark Sharp Edges
It was called Navy Blue, but I made it dark. You know, the way I like it.
Source Ethan Hamilton
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless pattern formed from a modified version of rwwgub's tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin