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Nginx vs stunnel: catalog facts
Nginx	stunnel
Free Nginx open source is free. Nginx Plus is a paid subscription.	Free Free under the GPL 2.0 or later, with paid commercial support and non-GPL licences…
Windows, macOS, Linux, Self-hosted	Windows, Linux, Command line
Event-driven model handles large numbers of idle connections cheaply One binary covers static serving, reverse proxying, caching and load balancing	Adds TLS to existing programs without code changes Supports load balancing for larger deployments
Dynamic modules must usually be compiled in Several load-balancing and monitoring features are exclusive to the paid Nginx Plus	Configured through text files, with no graphical setup Not a community project; development is controlled by the author
Self-hosted	Downloadable app
Open source	Open source
License: BSD-2-Clause	License: GPL-2.0-or-later
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 2, 2026

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