Jaeger - Distributed tracing system released as open source by Uber
AWS CloudTrail - AWS CloudTrail is a web service that records AWS API calls for your account and delivers log files to you.
Ensighten - Ensighten provides enterprise tag management solutions that enable businesses manage their websites more effectively.
Graylog - Graylog is an open source log management platform for collecting, indexing, and analyzing both structured and unstructured data.
Timber.io - Timber.io is the best logging platform for ruby, node, elixir and much more.
LogTrail - A Kibana plugin to view, search and tail logs and events