Development on the open-source version effectively stopped around 2010. It is no longer maintained or officially supported.
Recent versions (V2.0 through V7.0) require a purchased license for continued use after an evaluation period. 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 staruml license open source or proprietary
Would you like a printable decision flowchart or a sample table comparing open-source vs. proprietary StarUML features? staruml license open source or proprietary