Serial buses can be grouped into six main categories:
Point-to-Point Buses; driving one load only
IC Buses; driving chip-to-chip
Board-to-Board Buses; Back Plane buses
Chassis-to-Chassis buses; Short distance cable buses
Cable Buses; Fiber or Copper buses
SoC Buses; FPGA Buses, ASIC Buses

CanBus; Automotive Bus, Industrial Field Bus

DVI Bus: The Digital Visual Interface is an interface standard for high-speed digital displays

Fiber Channel Fibre Channel operates over fiber [400MBps] or copper [100MBps] cables

FireWire Bus IEEE 1394, used as a high-speed serial bus between a PC and peripheral device

Gigabit Ethernet operates using either Shielded Twisted Pair [STP] copper, Un-Shielded Twisted Pair [UTP], or CAT-5 copper or fiber cable. Gigabit Ethernet also runs over a backplane at over 1GHz

PCI Express Bus The Serial PCIe Bus uses two low-voltage differential LVDS pairs, at 2.5Gb/s in each direction. Using 8B/10B encoding, supporting 1x, 2x, 4x, 8x, 12x, 16x, 32x bus widths.

RapidIO RapidIO is used in High-performance embedded applications using LVDS

Serial ATA Bus SATA; A Mother Board to Hard-drive serial data bus standard. SATA uses 4 signal pins for transmitting and receiving differential pairs, plus an additional 3 grounds pins and a power pin.

Serial SCSI Bus Serial Attached SCSI [SAS] uses the SCSI protocol with a Serial ATA physical interface, running at 1.5Gbps or 3.0Gbps. SAS may soon replace parallel SCSI

USB Bus The Universal Serial Bus provides two-way communication between the PC and peripheral devices, over a differential serial interface cable.