Not strictly seamless in that opposite edges are not identical. But they do marry up to make an interesting pattern
Source Firkin
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
Prismatic Geometric Tessellation Pattern No Background
Source GDJ
A floral background formed from numerous clones of flower 117.
Source Firkin
Remixed from a drawing in 'Some account of the Worshipful Company of Ironmongers', John Nicholl, 1866.
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Embossed lines and squares with subtle highlights.
Source Alex Parker
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A nice and simple gray stucco material. Great on its own, or as a base for a new pattern.
Source Bartosz Kaszubowski
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Sharp pixel pattern, just like the good old days.
Source Paridhi
Spice up your next school project with this icon background.
Source Swetha
This is the remix of "blue wave-seigaiha".The image depicts a seamless pattern of the front upper part of Japanese five yen coin which is used currently.This design represents a rice with ripe golden ears.
Source Yamachem
Green Web Background, Seamless tile.
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
Medium gray pattern with small strokes to give a weave effect.
Source Catherine
A light gray background pattern with seamless fabric-like texture and almost unnoticeable stripes.
Source V. Hartikainen