Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
A seamless pattern formed from background pattern 102
Source Firkin
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Looks as if it's spray painted on the wall. You can be sure that this pattern will seamlessly fill your backgrounds on web pages.
Source V. Hartikainen
The image depicts a seamless pattern made using a bird's face.
Source Yamachem
From an image on opengameart.org shared by rubberduck.
Source Firkin
The image depicts a seamless pattern of a Japanese family crest called "chidori" in Japanese .A chidori in Japanese means a plover in English.
Source Yamachem
Zero CC tileable hard cover cells book texture, 4k, scanned and made by me. CC0
Source Sojan Janso
Pixel by pixel, sharp and clean. Very light pattern with clear lines.
Source M.Ashok
Number 2 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
This one is amazing, truly original. Go use it!
Source Viahorizon
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
This is the remix of "polka dot seamless pattern".The image depicts polka dot seamless pattern.
Source Yamachem
An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav
Zero CC tileable Crackled Cement (streaks) texture, photographed and made by me. CC0
Source Sojan Janso
CC0 remixed from a drawing. Walter Crane, 1914, Firkin.
Source SliverKnight
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
A free green background pattern with a pattern of rhombuses on a seamless texture. Feel free to use it as a tiled background image on your web site.
Source V. Hartikainen
No relation to the band, but damn it’s subtle!
Source Thomas Myrman
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Geometric lines are always hot, and this pattern is no exception.
Source Listvetra
Super detailed 16×16 tile that forms a beautiful pattern of straws.
Source Pavel