I like that it is open source and free to use. It is very easy to use and comes with many tutorials. It has both graphical as well as code-based editors. There are multiple ways of generating diagrams in this software. I can't say anything good about this tool, I am currently using it for creating UML diagrams only. Some tools make it difficult to create diagrams, however, this one makes it simple and straightforward.NetBeans UML allows me to get my work done quickly. The design view is also great because you can drag and drop your elements and see how they look before actually committing them to the final product.