SQLAPI++
Abstract Database Connector
CppDB - SQL Connectivity Library
dotConnect
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SQLAPI++Autodesk AutoCAD is recommended for architects, engineers, drafters, designers, and professionals in the construction and manufacturing industries. It is particularly suited for those who need precise and detailed technical drawings and have a requirement for compatibility with various file types and systems.
Abstract Database Connector - Abstract Database Connector is a C/C++ library for making connections to several databases (MySQL...
SketchUp - 3D for Everyone
CppDB - SQL Connectivity Library - CppDB is an SQL connectivity library that is designed to provide platform and Database independent connectivity API similarly to what JDBC, ODBC and other connectivity libraries do. http://cppcms.com/sql/cppdb/
LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
dotConnect - Ultimate solution for developing data-related .NET applications
FreeCAD - An open-source parametric 3D modeler