Are there commercial versions?
No, The price is ok for the work it does, but you can't call it on a great price.
Are there open source alternatives?
There are few open source alternative to ServiceDesk, with two of the most well-known being Zenoss web based service managing and DeskPortfolio.
ou de coupe. Et sans y toucher car il va s’encombrer. Alors qu’il aurait 50e0806aeb manvsad