Background pattern 231 #2301
Dark CC 0A seamless pattern based on a tile that can be achieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
More Textures
Connected #348
Light CC BY-SA 3.0White circles connecting on a light gray background.
Source Mark Collins
Natural Paper #833
Paper CC BY-SA 3.0You know I’m a sucker for these. Well-crafted paper pattern.
Source Mihaela Hinayon
Transparent Square Tiles@2X #299
Grid CC BY-SA 3.0The first pattern on here using opacity. Try it on a site with a colored background, or even using mixed colors.
Source Nathan Spady
Background pattern 235 (colour 5) #2251
Blue CC 0To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Cross Scratches #625
Paper CC BY-SA 3.0Subtle scratches on a light gray background.
Source Andrey Ovcharov
Ribbon pattern 2 (version 2, colour 5) #2035
Colorful CC 0The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Zodiac pattern (black background) #267
Dark CC 0A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I. Version with black background.
Source Firkin
Diagonal Waves@2X #1007
Gray CC BY-SA 3.0It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
Pinstriped Suit #665
Dark CC BY-SA 3.0Just like your old suit, all striped and smooth.
Source Alex Berkowitz
Diamond pattern (colour 7) #2274
Red CC 0From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Redox 01@2X #850
Light CC BY-SA 3.0Bright gray tones with a hint of some metal surface.
Source Hendrik Lammers
Fabric pattern 3 (colour 2) #2386
Fabric CC 0Alternative colour scheme. Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
ed62's pattern remixed #1728
Dark CC 0The original has been presented as black on transparent and stored in the pattern definitions. To retrieve the unit tile select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Background pattern #1941
Brown CC 0Formed by heavily distorting part of a an image of a fish uploaded to Pixabay by GLady
Source Firkin
Prismatic Isometric Cube Wireframe Pattern No Background #499
Light CC 0Prismatic Isometric Cube Wireframe Pattern No Background
Source GDJ
Background pattern 272 #2057
Brown CC 0A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Argyle #643
Dark CC BY-SA 3.0Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
Background pattern 315 (colour 3) #1843
Green CC 0The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin