SimpleLogic Wires is a mod which adds redstone, insulated and bundled cables.

Redstone cables function much like redstone dust, but they can be placed on any face!
Insulated cables come in one of sixteen (dye) colours, don't connect to wires of other colours and don't emit "strong" redstone power.
Bundled cables combine the sixteen insulated cable colours as separate channels, allowing you to transmit sixteen signals in one cable!

All of the cables come in freestanding and non-freestanding ("grounded") variants.

Additional functionality is also available:

Shift-scrolling lets you switch between the wires you have in your inventory without opening the inventory menu!
Since the wires are based on MCMultiPart 2, you can use existing mods (such as Chisels & Bits) to block off connections.

Behaviour differences from typical implementations:

The wires keep the analog value of the signal input into them - but do not decay it!

Known issues:

The wires used to be slightly wonky in 1.10. The big bugs have been fixed, but small ones may still lurk. That's why it's a beta!
"Fancy" bundled cable rendering is not yet available for freestanding cables.

Compatible mods: