When comparing Syslog-ng vs Raygun, the Slant community recommends Syslog-ng for most people. In the question“What are the best log management, aggregation & monitoring tools?” Syslog-ng is ranked 10th while Raygun is ranked 18th. The most important reason people chose Syslog-ng is:
Syslog-ng is free and open source.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Free and open source
Syslog-ng is free and open source.
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.
Cons
Con No advanced filtering out of the box
Sylog-ng does not have any advanced filtering out of the box.