JavaGram will run on any hardware that supports Java or Flash. The current installation program is packaged for Microsoft Windows.
UMLStudio runs Microsoft Windows.
When you download and install UMLStudio, it will run in freeware mode. This means that the software is fully functional, except that you cannot save large projects. Versions 3.0 to 7.2 use the same license key. Version 8.0 requires a new license key.
UMLServer runs on Microsoft Windows.
When you download and install UMLServer, it will run in freeware mode. In this mode, the server will serve up to 5 freeware UMLStudio licenses. It also allows you to check-in/out projects that are up to 5K in size.
To get the full benefit of UMLServer, you'll need at least 4 UMLStudio licenses. UMLStudio license information can be entered into UMLServer to turn them into floating licenses.
POMS will run on any hardware that supports Java. The current installation program is packaged for Microsoft Windows.
When you download and install POMS, it will run in freeware mode. This means that the software is fully functional, except that you can save up to 10 objects of each type (e.g., 10 projects, 10 issues, etc.).