Is there any good Open Source spreadsheet program that has a solver for linear programs (either included or via an extension) that does a proper sensitivity analysis (shadow prices etc)? It seems like OpenOffice and LibreOffice both don't offer the feature (and do not save the solver's metadata to the spreadsheet file which is quite annoying) and Gnumeric apparently has dropped its support for different reports including the sensitivity analysis.
Are there any good options left (I'd like to propose such a tool to my students as an alternative to Excel)?