These are not mine, I did not create these links or anything but figured I'd share them in case someone else is looking for them or finds them useful.
Here are a bunch of the old Havok SDKs and content tools before Microsoft bought it out and made everything private.
Code:
https://drive.google.com/drive/folders/0B8SgSQGjqypSaUxIT2ptUVVwVVk
https://drive.google.com/drive/folders/0B-85OBEi6SEkV2RhTTl0bzliZ28
https://drive.google.com/drive/folders/0B3SZOCCKd7Ipb2w2SkN4bjJwSzg