When comparing Appflux vs Raygun, the Slant community recommends Raygun for most people. In the question“What are the best error monitoring services for a Ruby on Rails web app?” Raygun is ranked 4th while Appflux is ranked 6th. The most important reason people chose Raygun is:
It's possible to comment on issues. Great for coordinating if and how exceptions should be handled within a team.
Specs
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Pros
Pro Integrated messages
Integrated Basecamp- like messages.
Pro Multiple project handling and permission management
Pro Github integration
Pro Jira integration
Pro Completely free of cost
No exception/email/number of users capping.
Pro Allows leaving comments on issues
It's possible to comment on issues. Great for coordinating if and how exceptions should be handled within a team.
Pro Exceptions are grouped
Raygun groups similar exceptions together displaying the number of occurences so that there's no need to deal with each instance of the error separately.
Pro Daily digest emails
Raygun can send a summary of all error that have happened over the day.
Pro Email notifications
Raygun can be set up to send email notifications as soon as exceptions occur.