This package contains the software code for online weight elicitation (Version : 0.9.4) and its admin interface (version 1.0.1). In Multi-Criteria Decision Analysis, weights are scaling constants representing the relative importance of the criteria. In this version, weight elicitation can be done with the swing method only, or with the swing method followed by the trade-off method and consistency check (with "learning loop"). The software can be used to send an online survey to many remote participants, or as an interactive tool during a facilitated workshop.