Groestlcoin is described as 'GroestlCoin (GRS) is a peer-to-peer Internet cryptocurrency utilizing the Groestl algorithm that enables instant payments to anyone in the world. GroestlCoin makes efficient mining possible for EVERYBODY who wants to mine – whether on an old CPU or a new GPU' and is a Money Transfer service in the business & commerce category. There are more than 50 alternatives to Groestlcoin for a variety of platforms, including Web-based, Windows, Linux, Mac and Android apps. The best Groestlcoin alternative is Bitcoin, which is both free and Open Source. Other great apps like Groestlcoin are Monero, PayPal, GNU Taler and Litecoin.