Background pattern 272 (colour 3) #2055
Red 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
More Textures
Flourish pattern (colour 2) #1738
Red CC 0Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Project Papper #119
Paper CC BY-SA 3.0Light square grid pattern, great for a “DIY projects” sort of website, maybe?
Source Rafael Almeida
Embossed Paper #731
Paper CC BY-SA 3.0One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
Vintage pattern #1960
Grid CC 0Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
Background pattern 199 #2508
Green CC 0Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
Sativa #1306
Dark CC BY-SA 3.0Honestly, who does not like a little pipe and mustache?
Source Luca Errico
Background pattern 261 #2076
Dark CC 0Inspired by a pattern found in 'A General History of Hampshire, or the County of Southampton, including the Isle of Wight', Bernard Woodwood, 1861
Source Firkin
Brick Wall #1146
Wall CC BY-SA 3.0One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
Blue Wallpaper For Websites #910
Stripes CC BY-SA 3.0A blue background wallpaper for websites. It has a seamless texture with vertical stripes. It looks quite nice not only when using as a tiled background on websites, but also on computer desktops.
Source V. Hartikainen
Tex2res2 #719
Fabric CC BY-SA 3.0Number 2 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Gold Scale@2X #285
Light CC BY-SA 3.0More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
Polonez Pattern #334
Gray CC BY-SA 3.0A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
Seed #1289
Wall CC 0Zero CC tileable seed texture, edited by me to be seamless from a Pixabay image. CC0
Source Sojan Janso
Chipboard 2 #2579
Wood CC 0A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Seamless Blue On Yellow Background #1160
Grid CC BY-SA 3.0This seamless pattern consists of a blue grid on a yellow background.
Source V. Hartikainen
Seamless Prismatic Pythagorean Line Art Pattern No Background@2X #570
Light CC 0Seamless Prismatic Pythagorean Line Art Pattern No Background. A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
Grid Paper Background (Blue Gray) #1162
Grid CC BY-SA 3.0A free grid paper background pattern for using on web sites.
Source V. Hartikainen
Prismatic Groovy Concentric Background No Black@2X #452
Noise CC 0Prismatic Groovy Concentric Background No Black
Source GDJ
Grid #974
Gray CC BY-SA 3.0There are quite a few grid patterns, but this one is a super tiny grid with some dust for good measure.
Source Dominik Kiss
Wavy background #2020
Green CC 0CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Micro Carbon@2X #8
Carbon CC BY-SA 3.0Three shades of gray makes this pattern look like a small carbon fiber surface. Great readability even for small fonts.
Source Atle Mo
Decorative divider 283 (version 2) #1855
Dark CC 0Remixed from a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin