Within Java, though, Quartz has ruled for years, it's aged, its website has been reorganized a few times so that half the search results end in dead links, it was time for a new contender. But my fear is that someone else takes the crown, with another business opportunity in mind, which is likely to fizzle too, and then the cycle just repeats. Another thread here was saying this is easy money, but are open source or open core or whatever companies really all that often a slam dunk?