DropConfig is described as 'Version-control and hosting'. There are more than 10 alternatives to DropConfig for a variety of platforms, including Mac, Windows, Linux, BSD and Online / Web-based. The best alternative is PostgreSQL, which is both free and Open Source. Other great apps like DropConfig are SQLite (Free, Open Source), MongoDB (Free), MySQL Community Edition (Free, Open Source) and Firebase (Freemium).
PostgreSQL is a powerful, open source object-relational database system. It has more than 15 years of active development and a proven architecture that has earned it a strong reputation for reliability, data integrity, and correctness.
SQLite is a software library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. SQLite is the most widely deployed SQL database engine in the world. The source code for SQLite is in the public domain.
MongoDB is a document database with the scalability and flexibility that you want with the querying and indexing that you need MongoDB stores data in flexible, JSON-like documents, meaning fields can vary from document to document and data structure can be changed over...
Etebase makes it easy to build end-to-end encrypted applications by taking care of the encryption and its related challenges. Think Firebase but encrypted in a way that only your users can access their data.
Couchbase is the NoSQL database market share leader, with production deployments at AOL, Deutsche Post, NTT Docomo, Salesforce.com, Turner Broadcasting Systems, Zynga and hundreds of other organizations worldwide.
Learn Firebase application helps any beginner to gain the proper information about firebase database. Learn Firebase application contains beginner level tutorials From Beginning to Deployment of any Database.