Stitched [email protected] #844
 Light  CC BY-SA 3.0

I love these crisp, tiny, super subtle patterns.

Source Badhon Ebrahim

 More Textures
Dark Denim #372
 Dark  CC BY-SA 3.0

Thin lines, noise and texture creates this crisp dark denim pattern.

Source Marco Slooten

Guitarpick #1682
 Paper  CC 0

Paper-Wallpaper. CC0 License.

Source Unknow

Background pattern 251 (colour 3) #2165
 Blue  CC 0

To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.

Source Firkin

Abstract Ellipses Background #275
 Dark  CC 0

Abstract Ellipses Background

Source GDJ

Floral background #1964
 Dark  CC 0

Remixed from a drawing in 'A Child of the Age', Francis Adams, 1894.

Source Firkin

Prismatic Dots Background [email protected] #504
 Noise  CC 0

Prismatic Dots Background 2

Source GDJ

Floral divider 2 #1924
 Dark  CC 0

From a drawing in 'A Guide to the Guildhall of the City of London', John Baddeley, 1898.

Source Firkin

Seamless Texture of Wood Planks #880
 Wood  CC BY-SA 3.0

Here's an yet another background for websites, with a seamless texture of wood planks this time.

Source V. Hartikainen

"Cork Board", Seamless Background For Websites #875
 Wood  CC BY-SA 3.0

Seamless Background For Websites. It has a texture similar to cork-board.

Source V. Hartikainen

Cells #1285
 Paper  CC 0

Zero CC tileable hard cover cells, skin like, book texture. 4K, Scanned and made by me CC0

Source Sojan Janso

Decorative divider 283 #1856
 Dark  CC 0

From a drawing in 'In an Enchanted Island', William Mallock, 1892.

Source Firkin

Rough Concrete Surface #1195
 Concrete  CC BY-SA 3.0

This one resembles a black concrete wall when is tiled. It should look great, at least with dark website themes.

Source V. Hartikainen

Prismatic Diamond Background 6 #383
 Diamond  CC 0

Prismatic Diamond Background 6

Source GDJ

Banner pack 6 #2438
 Colorful  CC 0

Three coloured banners. From an image on Pixabay.

Source Firkin

Plain & Walnut Dark #1358
 Wood  CC 0

CC0 for Free, hope you like it.

Source Yethiel

birdface seamless pattern #2470
 Unknow  CC 0

The image depicts a seamless pattern made using a bird's face.

Source Yamachem

P5 #1113
 Light  CC BY-SA 3.0

Number five from the same submitter, makes my job easy.

Source Dima Shiper

Wood 10 #1455
 Wood  CC 0

Gamedev - Wood Textures. CC0 License.

Source Davit Masia

Simple bump #172
 Dark  CC 0

A simple bump filter made upon request at irc #inkscape at freenode. Made a screen capture of the making here: https://youtu.be/TGAWYKVLxQw

Source Lazur URH

Light Wool #695
 Grid  CC BY-SA 3.0

Submitted as a black pattern, I made it light and a few steps more subtle.

Source Andy

Floral background 20 #1813
 Red  CC 0

Derived from a drawing in 'Elfrica. An historical romance of the twelfth century', Charlotte Boger, 1885

Source Firkin

Background pattern 223 (colour 2) #2352
 Blue  CC 0

Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.

Source Firkin

Stone Wall & Yellow #1528
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Iron Wrought & Black #1657
 Metal  CC 0

Metal-Rusty. CC0 License.

Source Unknow

Soft Circle [email protected] #114
 Light  CC BY-SA 3.0

Japanese looking fish scale pattern.

Source Ian Soper

Decorative divider 243 #2082
 Dark  CC 0

From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.

Source Firkin

Background pattern 222 (colour 2) #2344
 Brown  CC 0

A seamless pattern formed from a tile made from page ornament 22. To get the tile, select the rectangle in Inkscape and use shift+alt+i.

Source Firkin

Floors & Dark Wood #1615
 Wall  CC 0

Floors-Tiles. CC0 License.

Source Unknow