There are several excellent hosted services for error notification and processing in the Ruby world, such as hoptoad and exceptional.
I'd like to find a similar service for Java. I don't want to install a separate log monitoring system like Nagios because this is for a product that gets installed by customers and I need to keep things simple.
I know there's a log4j-to-hoptoad integration called frog4j, but it hasn't been revved for nearly a year. Are there any other alternatives? I'd prefer to find a hosted service that supports java directly, or a more actively maintained 3rd party tool.
PS - I'm on Grails if there's something Grails-specific.
Thanks!