Organizations utilizing StarUML without paying for licenses are liable for software piracy audits. The visibility of the source code does not equate to permission to use the software for free.
Since the release of V2, StarUML has utilized a commercial licensing scheme. The current version, , follows a device-based licensing model , replacing the previous user-based model to reduce legal ambiguity. staruml license open source or proprietary
Licenses are generally perpetual for the version purchased, but upgrades to new major versions usually require a fee. Historical Open-Source Roots follows a device-based licensing model
StarUML V1 remains available and can still be used for free for any purpose. staruml license open source or proprietary