Firebird vs RethinkDB: What are the differences?

What is Firebird? Relational database offering many ANSI SQL standard features that runs on Linux, Windows, and a variety of Unix platform. Firebird is a relational database offering many ANSI SQL standard features that runs on Linux, Windows, MacOS and a variety of Unix platforms. Firebird offers excellent concurrency, high performance, and powerful language support for stored procedures and triggers. It has been used in production systems, under a variety of names, since 1981.

What is RethinkDB? JSON. Scales to multiple machines with very little effort. Open source. RethinkDB is built to store JSON documents, and scale to multiple machines with very little effort. It has a pleasant query language that supports really useful queries like table joins and group by, and is easy to setup and learn.

Firebird and RethinkDB can be categorized as "Databases" tools.

Firebird and RethinkDB are both open source tools. RethinkDB with 22.4K GitHub stars and 1.74K forks on GitHub appears to be more popular than Firebird with 347 GitHub stars and 95 GitHub forks.

miDrive, Rove.me, and Lastbackend are some of the popular companies that use RethinkDB, whereas Firebird is used by IBSurgeon Ltd, KingHost, and Itasoft Software. RethinkDB has a broader approval, being mentioned in 37 company stacks & 25 developers stacks; compared to Firebird, which is listed in 3 company stacks and 5 developer stacks.