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Seq vs Elastic Stack: catalog facts
Seq	Elastic Stack
Freemium Proprietary software under the Datalust EULA; see the site for license options.	Freemium Components can be downloaded for free; hosted service and advanced features are paid.
Self-hosted	Self-hosted
Keeps log data on your own infrastructure Logs, traces and metrics in one place	Long-established standard for central log analytics Ingests data from many sources and formats
Proprietary, not open source You run and maintain the server yourself	Several separate services to deploy and maintain Some features are only available from Elastic's paid offerings
Self-hosted	Self-hosted, Hosted service
Closed source	Closed source
License: Proprietary	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.