Why are there so many interfaces and projects? The answer is simple. There is still (August 2026) no interface or port that surpasses the ease and consistency of writing the data to a single text file, and running the program from the console or double-clicking on the .exe file. None of the currently existing interfaces or ports solves the data entry problem effectively enough... which is the main aspect of a parametric design program like LEparagliding.

But that doesn't mean it can't be achieved.

1. The main goal is for the user to have a guide with explanatory texts and drawings (interactive or not) during data input.
2. It is also very important to know which sections are the really important ones, and which others are invariant and serve with the same data for almost any project.
3. The data groups (sections) must be consistent with themselves, so a verification mechanism must be established.
4. And finally all the sections must be consistent with each other, which depends mainly on the number of ribs and risers.
5. Therefore, it is necessary to program a partial and global consistency verification system, and if necessary, automatic completion mechanisms.
6. The integration of the preprocessor into the main program is also essential, since although we often call it optional, in practice it is completely necessary.

The good news is that some of the existing projects are already starting to solve these things. And there are other projects like the LEparagliding Studio port goes much further and adds XFLR5 analysis and 3D wind tunnel...

The world of programming has completely changed in recent times thanks to AI, which is now applied to almost all projects. Let's see what happens next...

Program	Description	Language	Operating system
LEP Paragliding 3.28	Laboratori d'envol paragliding design software. Manual. FAQ.	Fortran	Linux, Windows, OSX
LEP Pre-procesor 1.6	Geometry preprocessor for use (optional) with LEparagliding	Fortran	Linux, Windows
LEP-fedor	LEP fork by Fedor Logachev	Fortran	Linux, Windows
LEPGUI Tcl/Tk	GUI Tcl/Tk Version (old, discontinued)	Tcl/Tk
LEPGUI Python	By Stefan Feuz https://github.com/stefanino-ch/lepg-py	Python	Windows, Linux
LEPGUI html	Laboratori d'envol official project for GUI interface	html	Universal
LEP STUDIO	A modern C++/Qt/Open CASCADE LEP port  including XFLR, print, and playground adds, by Michael	C++/Qt/Open CASCADE	Windows, Linux