stunnel

Stunnel is a proxy designed to add TLS encryption functionality to existing clients and servers without changing their code.

Free software · stunnel.org

Open stunnel in AirStack

What stunnel’s own pages say

What it says it doesStunnel is a proxy designed to add TLS encryption functionality to existing clients and servers without changing their code. stunnel.org
PlatformsWindows stunnel.org
IntegrationsOpenSSL stunnel.org
Open sourceYes stunnel.org
Licensedistributed under GNU GPL version 2 or later with an OpenSSL exception stunnel.org

Each value is a quote AirStack found on the product’s own pages, read 2026-11-04. A missing field means AirStack has not found it on its pages.