"Seamless Bark", Website Background. #879
Wood CC BY-SA 3.0This background pattern contains a seamless texture of bark. It's not very realistic, but I think it looks quite nice.
Source V. Hartikainen
More Textures
Background pattern 215 (colour 2) #2370
Blue CC 0A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Finery #1370
Wall CC 0Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Green Background Pattern with Warped Vertical Stripes #968
Stripes CC BY-SA 3.0A green background pattern with warped vertical stripes and a grunge look.
Source V. Hartikainen
Waves decorative divider #1908
Blue CC 0Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Transparent Square Tiles #298
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
Decorative divider 213 #2336
Dark CC 0Inspired by a drawing in 'Kulturgeschichte', Freidrich Hellwald, 1896.
Source Firkin
"Light Green Wall", Repeatable Texture #1190
Concrete CC BY-SA 3.0Here's a repeatable texture that resembles a light green concrete wall or something similar.
Source V. Hartikainen
Prismatic Groovy Concentric Background 2 #453
Noise CC 0Prismatic Groovy Concentric Background 2
Source GDJ
Skewed Print@2X #820
Dark CC BY-SA 3.0An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
Blue Gray Fabric Like Texture #934
Stripes CC BY-SA 3.0A blue gray fabric-like texture for websites. An yet another fabric-like texture. It has subtle vertical and diagonal stripes to it.
Source V. Hartikainen
Circles #185
Light CC BY-SA 3.0One more sharp little tile for you. Subtle circles this time.
Source Blunia
Background pattern 245 (colour 5) #2188
Green CC 0This was formed by distorting an image of a background on Pixabay.
Source Firkin
Navy #984
Dark CC BY-SA 3.0It was called Navy Blue, but I made it dark. You know, the way I like it.
Source Ethan Hamilton
Floral background #1980
Brown CC 0Remixed from a drawing in 'Line and form", Walter Crane, 1914.
Source Firkin
Nami@2X #576
Dark CC BY-SA 3.0Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
Seamless Green Tile Background #1326
Green CC BY-SA 3.0Seamless Green Tile Background
Source V. Hartikainen
Wall #1245
Wall CC 0Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Arches #715
Light CC BY-SA 3.0One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock
Prismatic Geometric Pattern Variation 2 With Background@2X #472
Noise CC 0Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
Subtle Stripes@2X #752
Stripes CC BY-SA 3.0Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
Glass block pattern #2477
Brown CC 0Produced using the clouds, flames and glass blocks plug-ins in Paint.net and the resulting .PNG vectorised with Vector Magic.
Source Firkin
Background pattern 214 (colour 6) #2372
Colorful CC 0A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Alternative colour scheme.
Source Firkin
Felt@2X #301
Wall CC BY-SA 3.0Got some felt in my mailbox today, so I scanned it for you to use.
Source Atle Mo
Triangular@2X #1157
Gray CC BY-SA 3.0Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
R.I.P Steve Jobs@2X #293
Paper CC BY-SA 3.0He influenced us all. “Don’t be sad because it’s over. Smile because it happened.”
Source Atle Mo
White tiles@2X #728
Grid CC BY-SA 3.0A nice and simple white rotated tile pattern.
Source Another One