About Stunnel
Stunnel is a proxy designed to add TLS encryption functionality to existing clients and servers without any changes in the programs' code.
Stunnel 5.82
Stunnel is a proxy designed to add TLS encryption functionality to existing clients and servers without any changes in the programs' code.
- By Michal Trojnara
- Open Source
- Updated Sep 17, 2026
Technical details
| Publisher | Michal Trojnara |
|---|---|
| Version | 5.82 |
| Release date | 2026-09-17 |
| License | GPL-2.0 |
| Installer type | nullsoft |
| Architecture | x64 |
| Package ID | MichalTrojnara.Stunnel |
| Install scope | All users |
Install Stunnel from the command line
- Install with Windows Package Manager
winget install --id=MichalTrojnara.Stunnel -e- Update to the latest version
winget upgrade --id=MichalTrojnara.Stunnel -e- Uninstall
winget uninstall --id=MichalTrojnara.Stunnel -e- Silent install with the offline installer
"stunnel-5.82-win64-installer.exe" /S
Stunnel adds this command to the command line: stunnel.
Stunnel version history
5.81 Sep 16, 2026
5.80 Aug 4, 2026
5.79 Jun 29, 2026
Other versions
- 5.78
- 5.77
- 5.76
Frequently asked questions
Is Stunnel free?
Yes. Stunnel is free and open-source software released under the GPL-2.0 license.
What is the latest version of Stunnel?
The latest version is 5.82, released on Sep 17, 2026.
Is it safe to download Stunnel?
The download button links to the official installer published on stunnel.org, the same file Windows Package Manager installs. You can verify the downloaded file by comparing its SHA-256 checksum with 722c1ad626919af2b0034666b4d19cc4795e925c32f60e8f3c59af4fb3ad2dfc.
Which Windows versions does Stunnel support?
Stunnel runs on Windows and is available for 64-bit (x64) systems.
How do I install Stunnel silently?
Run the offline installer with "stunnel-5.82-win64-installer.exe" /S, or install it with Windows Package Manager: winget install --id=MichalTrojnara.Stunnel -e --silent.
How do I uninstall Stunnel?
Open Settings › Apps › Installed apps, find Stunnel and select Uninstall. From the command line, run winget uninstall --id=MichalTrojnara.Stunnel -e.
Alternatives to Stunnel
Other Encryption programs for Windows from different developers.
FireDaemon OpenSSL 4.1.0
OpenSSL: A Key Tool for Digital Security
step 0.31.0
A Swiss army knife for working with X.509 certificates, JWTs, etc.
Gpg4win 5.1.1
Gpg4win: A Free Security Program for Windows
GNU Privacy Guard 2.5.24
GNU Privacy Guard (GnuPG or GPG) is a free-software replacement for Symantec's PGP cryptographic software suite.
AxCrypt 2.1.1693.0
AxCrypt File Encryption Software - Free Personal Privacy and Security for Windows 2000/XP/Vista or later with AES-128 File Encryption, Compression and transparent Decrypt and Open in the original appl
NordLocker 6.5.0.0
NordLocker is a secure and easy-to-use cloud for your files, ideas, and memories. Encrypted at all times, your data is always within reach.
