What are some alternatives?
When comparing NXT and Gridcoin, you can also consider the following products
Allscripts CareInMotion - Other Health Care
Dogecoin - Dogecoin is an open source peer-to-peer digital currency, favored by Shiba Inus worldwide.
eClinicalWorks - eClinicalWorks - the largest Cloud EHR in the nation. Make the switch to eClinicalWorks
Ripple - Ripple connects banks, payment providers, digital asset exchanges and corporates via RippleNet to provide one frictionless experience to send money globally
Bitcoin - Bitcoin is an innovative payment network and a new kind of money.
NameCoin - Namecoin is a distributed domain name system based on the Bitcoin technology.