Sandwich is a multi-platform, multi-language, open-source library that provides a simple unified API for developers to use (multiple) cryptographic libraries in their applications.

TQ42 Cryptography is a comprehensive suite of quantum-resistant and asymmetric post-quantum encryption algorithms and key management functions offered under the open source AGPLv3 license and available under a Commercial license from Terra Quantum.

CryptoKey is an encapsulation for cryptographic keys in Go.