There is a new altcoin called Renesis (RESS) out there that comes with a new Renesis hash that mixes 8 already familiar different hashing algorithms in a more complex and secure mining algorithm. If you are looking for something new and different to mine, especially if you have Nvidia GPUs, that uses a new algorithm and miners respectively, then you might want to check out RESS. There is already a ccminer fork with Renesis support, only official Windows binary release for now (source). Experimental sgminer for AMD is also available, but not very good performance wise for the moment compared to Nvidia GPUs (source). You should be aware that the coin has a significant premine and it is really important how will that be used for the future development of the project…

– For more details about the Renesis (RESS) altcoin project check the announcement on Bitcointalk…

• Franko (FRK) Scrypt based cryptocoin
• Bitcoin Scrypt (BTCS) Scrypt based cryptocoin
• VertCoin Has Hard Forked to New Lyra2RE Algorithm
• Globalcoin (GLC) Scrypt based cryptocoin
• LitecoinDark (LTCD) Scrypt-based alternative cryptocoin
• List of Useful Resources for People New to Ethereum
• Are You Ready for the Ravencoin (RVN) Fork to KAWPOW Algo
• Signatum (SIGT) Crypto Coin With New SkunkHash-Raptor Algorithm
• AmberCoin (AMBER) X13-based alternative cryptocoin
• Myriad (XMY) Multi Algorithm based cryptocoin
• Handshake (HNS) Decentralized Naming and Certificate Authority
• Zetacoin (ZET) SHA-256 based cryptocoin
• Burst Crypto Currency with New Proof Of Capacity HDD Mining
• Mining Equilibria (XEQ) Using the Cryptonight-GPU Algorithm
• NXT Alternative Cryptocoin
• Fedoracoin (TIPS) Scrypt based cryptocoin
• Coin Magi (XMG) Proof of Interest 2015 Campaign
• Goldcoin (GLD) Scrypt based cryptocoin
• Dual Mining Kaspa (KAS) + Zilliqa (ZIL) Now Possible With GMiner 3.21
• CinniCoin (CINNI) Scrypt based cryptocoin
• New Renesis (RESS) Altcoin With New Mining Algorithm
• Mining Conceal (CCX) with CryptoNightConceal on Nvidia GPUs
• JSEcoin – Javascript Embeded Cryptocurrency for Webmasters
• Smartcoin (SMC) Scrypt based cryptocoin
• Low Power Optimized Mining of Dynex (DNX) on Windows