LTC is short for Litecoin, which is is one of the oldest cryptocurrencies in existence after Bitcoin, having launched in October 2011. It provides faster transaction confirmations (2.5 minutes on average) and uses a memory-hard, scrypt-based mining proof-of-work algorithm to target the regular computers and GPUs most people already have - which are its main differentials to Bitcoin.
English Name: LTC/Litecoin
Max Supply: 84,000,000
Encryption Algorithm: Scrypt
Consensus Method: PoW
Official Website: https://litecoin.com
Blockchain Explorer: http://explorer.litecoin.net/chain/Litecoin