database

MongoDB is a cross-platform document-oriented database program.

The Apache Hadoop software library is a framework that allows for the distributed processing of large data sets across clusters of computers using simple programming models. It is designed to scale up from single servers to thousands of machines, ...

Gambas is a free development environment and a full powerful development platform based on a Basic interpreter with object extensions, as easy as Visual Basic™.

AnyMeal is a free recipe database software developed using SQLite3 and Qt6. It can manage a cookbook with more than 250,000 MealMaster recipes, thereby allowing to import, export, search, display, edit, and print them.

A crossplatform desktop database application.

GUI frontend for setting up, administrating and curating KiCAD Database Libraries.

https://ochess.fr/

A Protocol Buffers database

A Time object library for C++.

fast, simple and safe permission database

Inverted index for matching incoming texts against a set of rules. Designed and optimized to be highly efficient and scalable.

Simple DBMS-agnostic C library for database access

Example source code showing how to work with SQL in Qt and C++