| OpTaliX-Pro: | contains all features.
              See the numerous examples and the feature list for
              details. | 
| OpTaliX-Edu | is functionally equivalent to the Pro-version and is offered to
             students and universities at a substantially reduced price. | 
| OpTaliX-LT | is shareware. It is a functionally reduced version of OpTaliX-Pro/Edu.
             It is limited to geometrical analysis, however, it uses the same
             unrestricted raytrace engine as OpTaliX-Pro/Edu. You may use the software 30 days
             for free. Download OpTaliX-LT | 
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              Please send an email to  for bug
              reports, feature requests or comments.
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              reports, feature requests or comments.