Ranked in these QuestionsQuestion Ranking
Pro Free and open source
Graylog2 is licensed under GNU GPL v3.
Pro Easy setup
Graylog2 can be quickly installed on any Linux machine running Java 7 via an executable that allows installing and configuring remote dependencies and graylog2 itself via a web interface.
Information and statistics displayed update in real time.
Pro Little maintenance
Pro Great interface
Easy to overview, intuitive and full of explainers.
Pro Server-side functionality can be extended via plug-ins
Pro Streams allow identifying events in real-time and perform actions
Stream allow filtering events in real time and perform action such as issue alerts or forward messages.
Pro Works well with just about any type of logging
Con Limited logging protocols support
Graylog2 only has support for syslog and GELF.
Con Self hosted. Difficult to maintain.
Maintenance is very difficult because of the high volume nature of logs.
Takes multiple servers even for smaller deployments
Con Interface is hard to use
The interface is hard to use, loaded with data, and difficult to understand.