This is an open-source goal modeling tool. Its key distinguishing characteristics are:
- it runs entirely on the browser, thus no installation needed
- high visual fidelity
- supports the iStar 2.0 standard
- creative techniques to help users elicitate new and novel requirements
- iStar extension to help bridge the use of creative techniques and the iStar language
- added accessibility features/design choices for neurodivergent users
If you need to mention the piStar tool, please reference this publication: Pimentel, João and Castro, Jaelson. piStar Tool – A Pluggable Online Tool for Goal Modeling. 2018 IEEE 26th International Requirements Engineering Conference, pp. 498-499.