Mac users interested in Topbraid composer for mac free edition generally download:
TopBraid Composer is a powerful semantic web modeling tool.
Main features:
- Visual editors for RDF graphs and class diagrams.
- Ability to generate SPARQL “by example” in the graph view.
- Automated conversion of spreadsheets, Excel, UML and other data sources.
- SPINMap – SPARQL-based ontology mapping tool.
