Background pattern 201 (colour) #2497
Grid CC 0A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
More Textures
Dark Brick Wall #135
Wall CC BY-SA 3.0Black brick wall pattern. Brick your site up!
Source Alex Parker
Tessellation 16 (colour 5) #2211
Yellow CC 0The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Overlapping planks 3 #2573
Wood CC 0A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Medic Packaging Foil@2X #377
Light CC BY-SA 3.08 by 8 pixels, and just what the title says.
Source pixilated
Dark Blue Gray Wallpaper Texture #901
Stripes CC BY-SA 3.0This seamless background image should look nice on websites. It has a dark blue gray texture with vertical stripes, it tiles seamlessly and, like all of the background images here, it's free. So, if you like it, take it!
Source V. Hartikainen
Graphy@2X #351
Grid CC BY-SA 3.0Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
Prismatic Geometric Pattern Background #407
Noise CC 0Prismatic Geometric Pattern Background
Source GDJ
60º lines #25
Light CC BY-SA 3.0Never out of fashion and so much hotter than the 45º everyone knows, here is a sweet 60º line pattern.
Source Atle Mo
Old Mathematics@2X #44
Stripes CC BY-SA 3.0This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
Decorative divider 298 #1744
Dark CC 0From a drawing in 'Bond Slaves. The story of a struggle.', Isabella Varley, 1893.
Source Firkin
Maze White@2X #1047
Light CC BY-SA 3.0Just like the black maze, only in light gray. Duh.
Source Peax
Concrete Wall 3@2X #94
Light CC BY-SA 3.0All good things come in threes, so I give you the third in my little concrete wall series.
Source Atle Mo
White Wall 2@2X #1021
Wall CC BY-SA 3.0A new one called white wall, not by me this time.
Source Yuji Honzawa
Concrete Wall #77
Wall CC BY-SA 3.0Dark blue concrete wall with some small dust spots.
Source Atle Mo
Background pattern 302 #1894
Red CC 0The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
Textured Red Brown Plastic #878
Wood CC BY-SA 3.0Textured Red Brown Plastic, Free Background Pattern. Although there's already enough plastic in our lives, let's bring it to the web too.)
Source V. Hartikainen
polka dot seamless pattern remix 02 #2495
Pink CC 0This is the remix of "polka dot seamless pattern".The image depicts polka dot seamless pattern.
Source Yamachem
Square ornament 27 #2523
Dark CC 0Formed from decorative divider 184 in paint.net. Vectorised with Vector Magic.
Source Firkin
Background pattern 232 #2297
Dark CC 0Heavily remixed from a drawing in 'Barbara Leybourne; a story of eighty years ago', Sarah Hamer, 1889.
Source Firkin
Colourful background #2008
Colorful CC 0Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Green & Ivy #1365
Green CC 0Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Tessellation 13 variant 1 #2532
Yellow CC 0Original seamless pattern with an Inkscape filter.
Source Firkin
Iron Grip@2X #588
Dark CC BY-SA 3.0Sounds like something from World of Warcraft. Has to be good.
Source Tony Kinard