What ist the difference between Hyperion and OX Server 5?
An can I use the OXtender vor OX Server 5 also with Hyperion?
Let me rephrase the first question: What do OX5 and Hyperion have in common? --> Nothing. They both are groupware but technology is completely different. This answers question 2: No, you cannot use the OXtenders of OX5 with Hyperion.