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Zenko CloudServer vs LocalStack: catalog facts
Zenko CloudServer	LocalStack
Free Free and open source under the Apache licence.	Freemium Open-source core with paid plans and enterprise options.
Linux, Self-hosted	Windows, Command line
S3-compatible API for local development and testing Can front multiple storage backends	Tests AWS applications without a cloud account Useful in CI pipelines and for AI agents
Aimed at developers rather than end users Building from source has several dependency steps	Emulation may not match real AWS behaviour in every case Some features are reserved for paid plans
Self-hosted	Downloadable app
Open source	Open source
License: Apache-2.0	License: Apache-2.0
Not stated if an account is needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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