4D is a company that has been making its mark in the database and rapid application development space since the 1980s. They offer a relational database management system that's tightly integrated with their own programming language, allowing developers to build robust, cross-platform applications for both desktop and mobile. The product emphasizes productivity and a visual development environment, aiming to streamline the process from database design to the final user interface. It's a niche bu… 4d 6