What are some alternatives?
logstash - logstash is a tool for managing events and logs.
Nagios Log Server - Nagios Log Server is centralized log management, monitoring & analysis software. Quickly & easily manage, monitor and analyze log data. Download Today!
Raygun - Raygun gives developers meaningful insights into problems affecting their applications. Discover issues - Understand the problem - Fix things faster.
Splunk - Splunk's operational intelligence platform helps unearth intelligent insights from machine data.
Kafka - Apache Kafka is publish-subscribe messaging rethought as a distributed commit log.
Graylog - Graylog is an open source log management platform for collecting, indexing, and analyzing both structured and unstructured data.