IRC SASL authentication primarily uses the same mechanisms as SASL in other protocols. Most commonly:

Desktop Clients 🔗

EXTERNAL PLAIN SCRAM-SHA-256

Web Clients 🔗

EXTERNAL PLAIN SCRAM-SHA-256

Mobile Clients 🔗

EXTERNAL PLAIN SCRAM-SHA-256

Bouncers 🔗

EXTERNAL PLAIN SCRAM-SHA-256

Bots 🔗

EXTERNAL PLAIN SCRAM-SHA-256

Libraries 🔗

EXTERNAL PLAIN SCRAM-SHA-256

Services Packages 🔗

EXTERNAL PLAIN SCRAM-SHA-256