I am planning to develop a help desk system using Ext-JS ( and other open source technologies Spring , Hibernate ,my SQL etc..). Development of this application will NOT need any modifications to Ext-JS source code or overriding the methods of Ext-JS API.
Does it come under GPL licensing only ? Can I sell this product to my clients ? Can I make business with this application without paying you guys any developer licensing costs or any other fees ?
Can you give me some insight of what I can not do or what I can with this application ?