Background pattern 201 (colour 3) #2493
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
Seamless 3D Isometric Tessellation Pattern 2 #147
Light CC 0A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
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
Flourish pattern #1736
Dark CC 0Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Wild Oliva@2X #989
Dark CC BY-SA 3.0Wild Oliva or Oliva Wilde? Darker than the others, sort of a medium dark pattern.
Source Badhon Ebrahim
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
White Wall 2@2X #1021
Wall CC BY-SA 3.0A new one called white wall, not by me this time.
Source Yuji Honzawa
Geometric pattern #2005
Grid CC 0A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
Background pattern 310 #1862
Red CC 0Based on an image that was uploaded to Pixabay by devanath
Source Firkin
Layered wood #2566
Wood CC 0A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
White Wall@2X #772
Wall CC BY-SA 3.0A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
Prismatic Geometric Pattern Variation 2 With Background #471
Noise CC 0Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
Flourish 2 #2299
Dark CC 0From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
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
Light Paper Fibers #835
Paper CC BY-SA 3.0More in the paper realm, this time with fibers.
Source Jorge Fuentes
Decorative divider 201 #2421
Dark CC 0From a drawing in 'Heroes of North African Discovery', Nancy Meugens, 1894.
Source Firkin
Hexagonal pattern (colour) #2378
Yellow CC 0A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Prismatic Polka Dots Mark II No Background@2X #531
Noise CC 0Prismatic Polka Dots Mark II No Background
Source GDJ
Leafy pattern 12 #1764
Dark CC 0From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Pixel Weave@2X #1155
Unknow CC BY-SA 3.0Clean and crisp lines all over the place. Wrap it up with this one.
Source Dax Kieran
Nistri #773
Stripes CC BY-SA 3.0No idea what Nistri means, but it’s a crisp little pattern nonetheless.
Source Markus Reiter
Floral design 95 #1790
Green CC 0From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Batthern@2X #325
Grid CC BY-SA 3.0Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
White Bed Sheet@2X #822
Light CC BY-SA 3.0Nothing like a clean set of bed sheets, huh?
Source Badhon Ebrahim
Spiral background 2 (colour 2) #2244
Colorful CC 0Remixed from a raster on Pixabay, that was uploaded by ArtsyBee.
Source Firkin
Finery #1370
Wall CC 0Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
White Wall 3@2X #1149
Wall CC BY-SA 3.0This one needs to be used in small areas; you can see it repeat.
Source Luca