I'm about to incorporate Quartz in one of our projects. While looking for a free UI to help us to monitor its execution state (jobs, etc.) we came across to this article: why-you-shouldnt-use-quartz
The author says Quartz is complex even for simple tasks (I tend to agree...) and mentions that Obsidian is a better option, which includes a nice UI out of the box. Indeed, that UI is somehow better than the best free alternative I cold find for Quartz (JWatch). Note: the author works for Obsidian...
Thanks,
The program Quartz is the most widely used, however have a big problem because your Front End is very expensive.
But there are graphical applications for the quartz that can help in its analysis, such as JWatch https://github.com/royrusso/jwatch that has a graphical user interface on the web (as you have told before), Citrine https://github.com/massdosage/citrine-scheduler, MyScheduler https://github.com/saltnlight5/myschedule, Apache Click http://click.apache.org/ is a plugin for Eclipse that can help us systems installation, among other Front-End ...
Obsidian is quite good, with only one problem, you have to paid the second license, for a company is not the best solution, because the price, but for individuals is a great solution.