OpenSSL is a popular open-source software library and command-line tool that provides a robust, full-featured set of cryptographic functions to secure communications over computer networks. It implements the Transport Layer Security (TLS) protocol, which is used to encrypt data transmissions across a wide range of applications including web servers, email, VPNs, databases, and IoT devices. OpenSSL provides a wide range of cryptographic functions, including symmetric encryption, public-key encryption, message digest and hash functions, digital signatures, and random number generation. It supports a large number of cryptographic algorithms, including AES, RSA, ECDSA, and Diffie-Hellman, as well as post-quantum algorithms such as ML-KEM, ML-DSA, and SLH-DSA. In addition to cryptographic functions, OpenSSL provides utilities for generating and managing digital certificates and keys, creating and verifying digital signatures, and performing TLS handshakes and negotiations. It also includes a comprehensive command-line tool for certificate management, key generation, TLS diagnostics, and general cryptographic operations.
The key advantages of using the FireDaemon OpenSSL over others that are available are:
- Recognised Source: Listed by the OpenSSL Project as a trusted third-party binary distribution for Windows
- Zero Dependencies: No Microsoft Visual C++ Redistributables required. We leverage the native Windows Universal C Runtime (UCRT) for "clean system" stability
- EV-Signed Integrity: All installers and binaries are digitally signed with a Sectigo Extended Validation (EV) certificate to ensure authenticity and bypass Windows SmartScreen warnings
- Flexible Deployment: Packaged for standalone, portable, or embedded use cases
- Verifiable Security: Every build is pre-scanned via VirusTotal and backed by our publicly available build scripts for total transparency
- Compliance Ready: Designed for developers and sysadmins who require a verifiable, audit-ready OpenSSL environment
Publisher’s description
What is FireDaemon OpenSSL?
FireDaemon OpenSSL by FireDaemon is open-source Windows software in the encryption category.
Installation and requirements
The publisher provides EXE installers for 64-bit Windows. Installation asks for administrator rights. A silent install is possible with the installer’s documented switches.
Updates and version history
The current version is 4.1.0, released on October 25, 2026. The version history goes back to October 4, 2023: 23 releases, all linked to the official files. That is about 7.5 releases a year. The last update is less than a month old.
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Documented silent install
- Frequent updates (about 7.5 a year)
Cons
- No native ARM64 build
- Installation needs administrator rights
In short: FireDaemon OpenSSL is an open-source encryption tool for 64-bit PCs. It is actively maintained. Administrators can deploy it unattended.
Is FireDaemon OpenSSL safe to download?
- The file is served by download.firedaemon.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
140A2E0EB117327EF329A95BDB2E6231BA116C467C219AB52BB39E6D1F7EAF73· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 23 versions ›23 versions over 3 years · about 7.5 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 4.1.0Latest | October 25, 2026 | — | 64-bit EXE |
| 4.0.3 | September 29, 2026 | 17.7 MB | 64-bit EXE |
| 4.0.2 | August 30, 2026 | — | 64-bit EXE |
| 4.0.1 | June 10, 2026 | — | 64-bit EXE |
| 4.0.0.3 | May 13, 2026 | — | 64-bit EXE |
| 4.0.0.1 | April 22, 2026 | — | 64-bit EXE |
| 4.0.0 | April 16, 2026 | — | 64-bit EXE |
| 3.6.2 | April 7, 2026 | — | 64-bit EXE |
Release cycle and support
| Release line | Released | Support ends | Latest version | Status |
|---|---|---|---|---|
| 4.0 | April 14, 2026 | May 14, 2027 | 4.0.3 | Supported |
| 3.6 | October 1, 2025 | November 1, 2026 | 3.6.5 | Supported |
| 3.5 (LTS)LTS | April 8, 2025 | April 8, 2030 | 3.5.9 | Supported |
| 3.4 | October 22, 2024 | October 22, 2026 | 3.4.8 | End of life |
| 3.3 | April 9, 2024 | April 9, 2026 | 3.3.7 | End of life |
| 3.2 | November 23, 2023 | November 23, 2025 | 3.2.6 | End of life |
| 3.1 | March 14, 2023 | March 14, 2025 | 3.1.8 | End of life |
| 3.0 (LTS)LTS | September 7, 2021 | September 7, 2026 | 3.0.22 | End of life |
Install from the command line
Silent install ›winget install --id FireDaemon.OpenSSL -eFireDaemon-OpenSSL-x64-4.1.0.exe /exenoui /qn /norestart REBOOT=ReallySuppress ADJUSTSYSTEMPATHENV=yesmsiexec /x {5BA06AD7-3B7B-451D-BB85-79864BB17520} /qn /norestartProgram files (.exe): openssl.exe
Related guide: How to use winget: install and update apps
Information
- Publisher
- FireDaemon
- Category
- Encryption
- Licence
- Apache-2.0
- Price
- Free
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- EXE
- Version
- 4.1.0
- Released
- October 25, 2026
- Added to the catalogue
- October 4, 2023
- Versions listed
- 23
- Updates / year
- 7.5
- Website
- firedaemon.com
- winget ID
- FireDaemon.OpenSSL
- MSI product code
- {5BA06AD7-3B7B-451D-BB85-79864BB17520}
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is FireDaemon OpenSSL free?
Yes. FireDaemon OpenSSL is open-source software under the Apache-2.0 licence.
Is FireDaemon OpenSSL safe to download?
The download comes from download.firedaemon.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install FireDaemon OpenSSL with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can FireDaemon OpenSSL be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does FireDaemon OpenSSL run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Where can I download an older version of FireDaemon OpenSSL?
The versions page lists all 23 versions with links to their official installer files, back to October 4, 2023.
What are alternatives to FireDaemon OpenSSL?
Cryptomator, i2pd, GNU Privacy Guard, Keybase and KopiaUI. The alternatives page compares them.
