To understand the significance of Dialux 3.14, one must look back. DIAL GmbH, a German company based in Lüdenscheid (the heart of Germany's lighting industry), began developing this free software to democratize professional lighting design.

| Feature | DIALux 3.14 | Modern evo / Revit | | :--- | :--- | :--- | | | Static factor only | Dynamic, climate-based | | Real-time ray tracing | None | Yes (NVIDIA OptiX) | | BIM interoperability | IFC export only (broken) | Native IFC, Revit, Rhino | | Tunable white / Circadian | No | Yes (via plugins) | | Multicore CPU / GPU | Single core only | Yes | | Open file format | Binary .dip (proprietary) | SQLite (human-readable) |

DIALux is the world's leading software for professional lighting design, calculation, and visualization. Version 4.14 (the final major release before the "evo" series) remains a staple in the industry due to its lightweight nature, speed, and reliability for standard indoor and outdoor calculations. It is used by lighting designers, electrical engineers, and architects to create lighting calculations that meet international standards (EN 12464).