Catcoin is a version of the Litecoin cryptographic currency, using scrypt as a proof-of-work algorithm, and using substantially similiar blockchain parameters to Bitcoin:

Information
PoW algorithm: Scrypt
Current Code Version: 0.9.1.1
Premine: ABSOLUTELY ZERO!
Block reward: 50 CAT
Block time: 10 minutes
Retarget: 1 Block, Using a custom PID algorithm designed by Blaksmith.
Starting difficulty: 108
Max supply: 21 million
Reward halving interval: 210,000 blocks
Source code: https://github.com/CatcoinOfficial/CatcoinRelease