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Dehydrated vs win-acme: catalog facts
Dehydrated	win-acme
Best for: Administrators who want a scriptable ACME client for TLS certificates	Best for: Windows server administrators automating Let's Encrypt certificates for IIS and other services
Free Free and open source under the MIT license.	Free Free and open source under the Apache 2.0 licence.
Command line	Windows, Command line
Supports ACME v2 and wildcard certificates Can renew and revoke certificates All 3 strengths for Dehydrated Supports ACME v2 and wildcard certificates Can renew and revoke certificates Implemented as a shell script with common system dependencies	Simple guided setup for IIS sites Automatic renewal via a scheduled task All 4 strengths for win-acme Simple guided setup for IIS sites Automatic renewal via a scheduled task Many DNS validation plugins and certificate storage options Extensible with PowerShell scripts and C# plugins
Requires OpenSSL and cURL	Windows only Advanced scenarios need familiarity with ACME validation
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: Apache-2.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Sources for Dehydrated dehydrated.io Catalog checked October 8, 2026	Official website Full listing and sources Sources for win-acme win-acme.com Catalog checked October 2, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.