To get the tile this is made up from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
From a drawing in 'Kingsdene', Maria Fetherstonehaugh, 1878.
Source Firkin
From a drawing in 'Picturesque New Guinea', J Lindt, 1887.
Source Firkin
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
This one is amazing, truly original. Go use it!
Source Viahorizon
Orange-red pattern for tiled backgrounds.
Source V. Hartikainen
A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
Remixed from a drawing in 'A Child of the Age', Francis Adams, 1894.
Source Firkin
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
Prismatic Geometric Tessellation Pattern 4 No Background
Source GDJ
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
Here's an yet another seamless note paper texture for use as a background on websites.
Source V. Hartikainen
Seamless Prismatic Geometric Pattern With Background
Source GDJ
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Hexagonalist Pattern No Background
Source GDJ
You just can’t get enough of the fabric patterns, so here is one more for your collection.
Source Krisp Designs
If you need a green background for your blog/website, try this one. Remember that Green Striped Background is seamlessly tileable.
Source V. Hartikainen
One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
More carbon fiber for your collections. This time in white or semi-dark gray.
Source Badhon Ebrahim
The image is a design of blue glass.How about using it as background image?
Source Yamachem
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Thin lines, noise and texture creates this crisp dark denim pattern.
Source Marco Slooten