When comparing Appenlight vs Syslog-ng, 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 Appenlight is ranked 21st. The most important reason people chose Syslog-ng is:
Syslog-ng is free and open source.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Log events system
It's possible to trigger events on certain logs. For example log.error happens, or failed password text is found in logs
Pro Error reporting
Sentry compatible and custom error reporting for most popular languages like JavaScript, Go, Python, Java, and PHP.
Pro Scales for Enterprises
Multi-node elasticsearch and scalable architecture easily supports 10000s+ of events/min
Pro Custom log Dashboards
Plot any type of graphs and aggregation with an easy to use composer.
Pro Free and open source
Syslog-ng is free and open source.
Cons
Con No advanced filtering out of the box
Sylog-ng does not have any advanced filtering out of the box.