syslog-ng is an enhanced log daemon, supporting a wide range of input and output methods: syslog, unstructured text, message queues, databases (SQL and NoSQL alike) and more. Key features: * receive and send RFC3164 and RFC5424 style syslog messages * work with any kind of unstructured data * receive and send JSON formatted messages * classify and structure logs with builtin parsers (csv-parser(), db-parser(), ...) * normalize, crunch and process logs as they flow through the system * hand on messages for further processing using message queues (like AMQP), files or databases (like PostgreSQL or MongoDB). The official home page of syslog-ng is: http://www.balabit.com/network-security/syslog-ng/