Headhunter: Tree Druid is made by Zenstar Software and can be found at www.zenstar.com. The price is 99.95 for the stand alone version for PC. I'm not sure if there's one available for the Mac yet. There are a number of pre-defined trees contained in the program, but a Mangrove isn't one of them. I would imagine that it would be easily constructed, though, through the programs options. Hope this helps.