Moodle allows students to submit assignments anonymously. Students are emailed the ID and instructors, as far as I understand, cannot see the true identity. Is there a way to automatically link the pseudonyms to the true identities once the anonymously assigned results have been fixed? It would be important, of course, that this cannot be used to undermine anonymization.
Anonymous submission does not seem to be possible in the tests/quizzes. This would be an important feature, and is mandatory in some countries and faculties, or at least part of the code of conduct.