This is sort of fresh, but still feels a bit old school.
Source Martuchox
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Stefan is hard at work, this time with a funky pattern of squares.
Source Stefan Aleksić
Remixed from a JPG that was uploaded to Pixabay by Osckar
Source Firkin
A free seamless background image with a texture of dark red "canvas". It should look very nice on web sites.
Source V. Hartikainen
A seamless paper background texture colored in pale yellow. This seamless texture is ideal for those who need a yellow background image for their website. The texture resembles paper.
Source V. Hartikainen
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A textured orange background pattern with vertical stripes.
Source V. Hartikainen
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A free seamless background pattern for use on websites.
Source V. Hartikainen
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Number 4 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
A seamless pattern based on a rectangular tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
The name tells you it has curves. Oh yes, it does!
Source Peter Chon
Seamless Prismatic Geometric Pattern With Background
Source GDJ
A free pink background pattern.
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
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
Medium gray pattern with small strokes to give a weave effect.
Source Catherine
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Honestly, who does not like a little pipe and mustache?
Source Luca Errico
Abstract Arbitrary Geometric Background derived from an image on Pixabay.
Source GDJ
Looks like an old rug or a computer chip.
Source Patutin Sergey