Kiwi Syslog Server - Kiwi Syslog Server prvides solution to centralize and simplify log message management across network devices and servers.
logstash - logstash is a tool for managing events and logs.
Graylog - Graylog is an open source log management platform for collecting, indexing, and analyzing both structured and unstructured data.
rsyslog - Rsyslog is an enhanced syslogd supporting, among others, MySQL, PostgreSQL, failover log...
Splunk - Splunk's operational intelligence platform helps unearth intelligent insights from machine data.
Sentry.io - From error tracking to performance monitoring, developers can see what actually matters, solve quicker, and learn continuously about their applications - from the frontend to the backend.