Apache Druid
7.1#2 in streaming analytics softwareFree planFree planWebAPILinuxmacOS
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Druid suits teams building user-facing analytics or working with streaming data that need low-latency, concurrent queries and quick visibility into incoming data. It can also serve ad hoc analysis of semi-structured data such as JSON.
Teams processing streaming events that need SQL, stateful handling or event-time windows. It suits hybrid deployments with workloads written in SQL, JavaScript or C#.