Yes. Some other departments at BU have Moodle pages that you may access without a key. Within these pages, you will find a variety of resources to assist you with your studies. For example, if you go back to the Course Categories page - the Moodle homepage - you will see entries for Student Services, the Library, and Communication Websites.
If you click on Student Services, you will see that this department has a variety of listings. For some, they tell you how a key is obtained. For others, they give you the key in the information section. And for some, there is no key. Simply click and connect.
Different departments will have different content.
For example, the Library has links for BU Library Reserves, BU Library Videos, and Licensed Library Resources.
For Communications Websites, some options require keys, others do not, or give you the password.