MongoDB - MongoDB (from "humongous") is a scalable, high-performance NoSQL database.
Realm.io - Realm is a mobile platform and a replacement for SQLite & Core Data. Build offline-first, reactive mobile experiences using simple data sync.
Brilliant Database - Create a personal or business desktop database fast and easily using this simple all-in-one database software. Free 30 day trial.
ObjectBox - ObjectBox empower edge computing with an edge device database and synchronization solution for Mobile & IoT. Store and sync data from edge to cloud.
CouchBase - Document-Oriented NoSQL Database
CompactView - Viewer for Microsoft® SQL Server® CE database files (sdf)