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

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