What are some alternatives?
When comparing Elastictable and FaunaDB, you can also consider the following products
Jexia - Build scalable, reliable and real-time (mobile)applications faster and easier.
Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
Hasura - Hasura is an open platform to build scalable app backends, offering a built-in database, search, user-management and more.
CouchDB - HTTP + JSON document database with Map Reduce views and peer-based replication
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.