Based on 7 reviews and ratings
If you need a whole infrastructure and architect view, IBM Rational System Architect is the way to go. If you need a single diagram or your business process is young enough to support hard documenting, you are fine with an open source tool.
MS Office exportingUML modelingTransformation to codeA reverse transformation from codeIntegrates with other IBM products
Always has a price. And IBM is not cheapSequence diagrams can get messy (still has a good UI)Only support few databases as backend repositories like SQL Server and Oracle
No setup fee
If you have a budget or the need for a complex modeler or need diagram transformation to code or vice-versa, IBM Rational System Architect is the way to go. If you need few diagrams or don't need the complexity or don't have a budget, Bizagi or Star UML get the things done.
Clients like good modeling. A good diagram reduce costs in incidents and doubts of bad interpretationsReduce costs of recognition of old software.