SOURCEdefender is a security platform designed to protect Python source code through symmetric AES 256-bit encryption. It addresses the need for securing intellectual property in Python projects by encrypting code and controlling its distribution, targeting developers and organizations seeking to prevent unauthorized access or reverse engineering. 14 and supports major operating systems, including Windows (AMD64), Linux (x86_64 and AARCH64), and macOS (x86_64 and ARM64), all on 64-bit architectures. Encrypted code can be run seamlessly on any supported platform with the same Python version, and the decryption process occurs during import, ensuring no performance impact at runtime.
SOURCEdefender integrates with PyInstaller, allowing users to bundle encrypted files or folders into a single executable binary for distribution. The platform supports expiration control, enabling developers to enforce expiration times on encrypted code for access management. It is also FIPS 140-2 compliant, meeting industry standards for cryptography. The tool is CI/CD pipeline friendly, and encrypted code can be executed within Docker containers, with individual container instances requiring license activation unless the Enterprise Plan is used. Integration is straightforward, with installation via pip and license activation managed through a token system. pyc files, requiring no special handling.
Licensing is system-based, with each system that creates encrypted code needing its own license. Distribution of encrypted code does not incur recurring costs, and customers’ servers do not require a license to run encrypted applications. Pricing includes a free trial that allows code encryption with a 24-hour time-to-live, as well as paid plans: Business (£15 per development system per month), Professional (£150 per development system per year), and Enterprise (£1500 per year for unlimited usage). Basic email support is included across plans, and professional services are available as an option. The platform is positioned as a cost-effective and easy-to-integrate solution for Python code security.
sourcedefender sits in PulseGate's Security & compliance platforms category. It focuses on preventing unauthorized access and reverse engineering of proprietary Python code. It is built as a B2B product for python developers and software vendors. sourcedefender is a paid product. sourcedefender is available on the web and the command line.
Behind sourcedefender is sourcedefender, based in the United Kingdom, and the product first shipped in 2026. Key capabilities include python code encryption, AES encryption, and source code protection.
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