STunnel
Stunnel is a proxy designed to add TLS encryption functionality to existing clients and servers without any changes in the programs' code.
Some of the top features or benefits of STunnel are: Security, Versatility, Open Source and Free, Cross-Platform, and Minimal Configuration. You can visit the info page to learn more.
Best STunnel Alternatives & Competitors in 2025
The best STunnel alternatives based on verified products, community votes, reviews and other factors.
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Open-Source Alternatives.
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/powershell-alternativesDownload WMF. Windows Management Framework contains the latest versions of PowerShell, DSC, WMI, and WinRM for older versions of Windows. PowerShell Module Browser. Search for PowerShell modules and cmdlets.
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/aes-crypt-alternativesAES Crypt is an advanced file encryption utility that integrates with the Windows shell or runs from the Linux command prompt to provide a simple, yet powerful, tool for encrypting files using the Advanced Encryption Standard (AES).
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Try for freeVerify your customers in under 15 seconds anywhere in the world with a cutting-edge SaaS & API platform for Identity Verification and AML/KYC compliance.
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/v2ray-alternatives
A platform for building proxies to bypass network restrictions.
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/shadowsocks-alternativesA fast tunnel proxy that helps you bypass firewalls
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/openssl-alternativesOpenSSL is a free and open source software cryptography library that implements both the Secure Sockets Layer (SSL) and the Transport Layer Security (TLS) protocols, which are primarily used to provide secure communications between web browsers and …
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/boxcryptor-alternativesBoxcryptor encrypts your sensitive files before uploading them to cloud storage services like Dropbox, Google Drive, Microsoft OneDrive, Box, and many others.
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/hushmail-alternativesFull-featured email service with integrated security to safeguard your data.
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/protonvpn-alternativesProtonVPN is a security focused FREE VPN service, developed by CERN and MIT scientists. Use the web anonymously, unblock websites & encrypt your connection.
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/hitch-tls-proxy-alternatives
Hitch is a libev-based high performance SSL/TLS proxy by Varnish Software.
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/stackfield-alternativesWork in a team with tasks, files and real-time messages in end-to-end encrypted data rooms.
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/openvpn-alternativesOpenVPN - The Open Source VPN
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/psiphon-alternativesPsiphon is circumvention software for Windows and Mobile platforms that provides uncensored access to Internet content. Read more about Psiphon.
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/filevault-alternativesFileVault is a method of using encryption with volumes on Mac computers.
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