...
Sumo Logic
Splunk
Graylog
Loggly
Key
Key Differentiators:
Discovers new log sources, such as buckets and API endpoints, automatically without depending on human input
Decorates event data with cloud provider tags
Automatically archives older data into less expensive storage, resulting in lower cost of ownership
Uses Open Standard ''Lucene'' and ''Elasticsearch'' query languages
Advanced capabilities, such as anomaly detection and forecasting without extra cost
...