Tarantool is described as 'A NoSQL database running in a Lua application server. Tarantool combines the network programming power of Node.JS with data persitence capabilities of Redis' and is an app in the Development category. There are more than 10 alternatives to Tarantool for a variety of platforms, including Linux, Mac, Windows, BSD and Self-Hosted solutions. The best alternative is Node.js, which is both free and Open Source. Other great apps like Tarantool are MongoDB (Free), Redis (Free, Open Source), CouchDB (Free, Open Source) and RethinkDB (Free, Open Source).