Openturns is a powerful and generic tool to treat and quantify uncertainties in numerical simulations in design, optimization and control. it allows both sensitivity and reliability analysis studies:
* defining the outputs of interest and decision criterion;
* quantify and model the source of uncertainties;
* propagate uncertainties and/or analyse sensitivity and
* rank the sources of uncertainty
openturns is a large project with more than 300 c++ classes which uses well known and supported software such as r for the statistical methods and blas/lapack for the linear algebra.

this package provides a lot of documentation about openturns: a reference manual, a user manual, a use case guide, an how to contribute guide, an architecture guide and a guide to wrap your code and make it usable into openturns.