• cryptography
• quantum

The Open Quantum Safe (OQS) project is an open-source project that aims to support the transition to quantum-resistant cryptography. OQS is part of the Linux Foundation’s Post-Quantum Cryptography Alliance.

• cryptography
• learn

CryptoBook is a community project, developed by members of CryptoHack to create a resource for people to learn cryptography. The focus of this project is to create a friendly resource for the mathematical fundamentals of cryptography, along with corresponding SageMath implementation.

• cipher
• cryptography

A curated list of websites for cryptography.

• cryptography
• forum

Forum for Hashcat.