National Security Agency European Union Agency for Cybersecurity National Cyber Security Centre
Some organizations have recommended using "Post-Quantum Cryptography (or quantum-resistant cryptography)" only as an alternative because of the problems it raises in practical use. For example, National Security Agency of USA, European Union Agency for Cybersecurity of EU (ENISA), UK's National Cyber Security Centre, and French Secretariat for Defense and Security (ANSSI) recommend it.
