logstash - logstash is a tool for managing events and logs.
PagerDuty - Cloud based monitoring service
rsyslog - Rsyslog is an enhanced syslogd supporting, among others, MySQL, PostgreSQL, failover log...
OpsGenie - Alerting and On-Call Management for Dev&Ops Teams
Graylog - Graylog is an open source log management platform for collecting, indexing, and analyzing both structured and unstructured data.
Squadcast - Automate incident response, reduce downtime and enhance your tech teams’ delivery with a unified platform.