Karma

Aggregates and deduplicates alerts from multiple Alertmanager instances or HA clusters, tagging each alert with source information for filtering, as shown in the @alertmanager and @cluster tags.

Groups alerts based on Alertmanager's group_by configuration, displays unique labels and annotations, and includes a color-coded histogram for alert history over 24 hours by querying Prometheus servers.

Provides a modal interface for creating and managing silences with support for ACL rules to control permissions, and allows proxy mode for secure operations between the UI and Alertmanager.

Enables grouping of alert groups by label values, such as environment or severity, for better organization across large alert volumes, as demonstrated in the multi-grid screenshot.