This was a great option a few years ago, but I wouldn't recommend this. It seems stagnated, based on legacy infrastructure, doesn't really fit into modern UI us

This was a great option a few years ago, but I wouldn't recommend this. It seems stagnated, based on legacy infrastructure, doesn't really fit into modern UI usage patterns anymore, and doesn't collaborate easily. At some point I thought they would overtake a combination of Gliffy and StarUML, but right now even draw.io is a better option.