Katzebase is a free, open-source document database for Windows and Linux that combines the flexibility of document-based storage with many of the features normally associated with a traditional relational database.
pgAdmin 4 is an Open Source tool that allows multi-database management through an administration interface for PostgreSQL permitting statements, procedure viewing, and more.
Database Browser provides fast database connections that allow browsing and modification of data, running SQL scripts, exporting, importing, printing data, and more.
ESEDatabaseView allows the simple reading and display of data stored within the Extensible Storage Engine (ESE) database (AKA 'Jet Blue' or .edb file).
SysTools CSV Splitter is a lightweight utility designed to make managing massive CSV files a breeze, perfect for anyone dealing with bulky spreadsheets, database exports, or large contact lists.