GraphStack.io is described as 'GraphStack ™ is the name for the Neo4j Enterprise open source distributions compiled and packaged from the official Neo4j Github Repository by the Graph stack.io Team' and is an app in the Development category. There are five alternatives to GraphStack.io for Mac, Linux and Windows. The best alternative is ArangoDB, which is both free and Open Source. Other great apps like GraphStack.io are neo4j (Free, Open Source), RedisGraph (Free, Open Source), LemonGraph (Free, Open Source) and AllegroGraph (Paid).
RedisGraph is a property graph database module for Redis. It is the first graph database to use linear algebra on sparse adjacency matrices to implement graph operations, which lets it achieve high performance. It understands OpenCypher queries.