Lighting Design Tools


Professional lighting design

With our free software.

Good results require good planning tools. This is why we develop software which we provide for you free of charge. Over 680 000 users worldwide plan, calculate and visualize professional architectural lighting with DIALux. Planning with real products plays a decisive role for the later realisation of ideas. We also offer other tools to support your workflow as a lighting designer.

With this free software you can design, calculate and visualize light professionally – single rooms, whole floors, buildings and outdoor scenes. DIALux is used as a planning tool by over 680 000 lighting designers worldwide. DIALux constantly undergoes further development and meets the requirements of modern lighting design and lighting calculation. You can plan and design using the electronic luminaire catalogues of the world’s leading luminaire manufacturers. Superimpose on the CAD data of other architectural programmes and create your own lighting design.

Download DIALux Free of charge ›

DIALux for manufacturers





Relux, the Standard in Light-planning

Relux Informatik AG, Switzerland is an established company for the development, production and marketing of lighting planning and product presentation software. The company is active worldwide and works together closely with its representations. Relux is now a standard in contemporary lighting planning. The company was founded as a joint stock company in February 1998 by three luminaire manufacturers. Relux was able to take over the former jointly developed programme of the Swiss lighting industry association "Fachverband der Beleuchtungsindustrie". Since 2010, Relux Informatik AG is an independent privately held company by its management team.

Relux will be celebrating its 20th anniversary in 2018.

Relux Informatik AG, Switzerland, offers users innovative and high-performance lighting planning software with open interfaces and simultaneous access to current product data from luminaire, sensor and lamp manufacturers. Through the contributions paid by Relux members, these high-quality planning aids can generally be made available to users free of charge or for a small licence fee in some case

ReluxNet® – THE search machine for luminaires and sensors
Are you looking for suitable luminaires, light sources or sensors for your project?
Use the product data for your planning work with the applications provided by Relux. You need product data in the file formats: rlx (Relux), rfa (Revit), dwg (AutoCAD), ldt (Eulum), ies (IES)?
Leading international manufacturers make around one million product versions and items of measurement data available to you on this online platform. The product data are also ported, in parallel, into additional data formats so that you, the users, can work with them in other applications too.
ReluxNet® can also do a great deal more:
● Compare products and save your favourites!
● Enter your own products! Make the online database into your day-to-day work tool – data cannot be more up-to-date than this!
Product Search

ReluxDesktop is a high-performance, intuitively-operated application for simulating artificial light and daylight. It provides you with rapid and efficient support on all the different aspects of big and small projects, without taking any unnecessary roundabout routes.

Simulation of lighting and sensors in real time! Calculation of absolute values, national and international standards, compatible with CAD and BIM systems, plus a great deal more. The application is available to you free of charge thanks to the support of our partners in industry.

227,912 users are already working successfully with it.

Make ReluxDesktop your day-to-day tool – you'll be surprised how much time you save with it!

Download Release Notes System Requirements

What is AGi32?

AGi32 is first and foremost, a Calculation tool for accurate photometric predictions: A technical tool that can compute illuminance in any situation, assist in luminaire placement and aiming, and validate adherence to any number of lighting criterion.

However, there is so much more that can be done to enhance the understanding of photometric results. Visualization is extremely important to comprehend changes in luminance for different materials and surface properties and predict the effect of various luminaire designs in real-world, light and surface interaction.

With the ability to see results clearly for an entire project, AGi32 becomes a mock-up substitute that can save time and money by creating a virtual model of a proposed design. It can reveal characteristics and effects that would be hard to detect in anything short of the completed installation.

In the practice of professional lighting design and analysis, AGi32 can be indispensable in your arsenal of design tools. And now, with our new multi-processor capable calculation engine, your work will be complete in only a fraction of the time!

  AGi32 rendering with Overlay feature enabled

Download a brief datasheet describing AGi32 features and capabilities 

Within these pages you can learn about the calculational capability of AGi32 which has been an industry standard since 1999 (not to mention its predecessors). Then investigate the inner workings of how AGi32 can create models that will work for you, either using internal tools or by importing content from elsewhere. Finally, imagine how the interactive rendering capability of the program will make it easy for you to see your designs as they progress, and then make your presentations easily understood by others.

It’s all here; tons of information on AGi32, the Instabase photometric library, and all the tools that go with it. When you have read enough, download a Trial version and experiment on your own.