MITs Open Course Ware
MIT OpenCourseWare (OCW) is a web-based publication of virtually all MIT course content. OCW is open and available to the world and is a permanent MIT activity
Merck Manual - Professional
The Manual grew is one of the most widely used comprehensive medical resources for professionals and consumers providing medical information of the day to a wide cross-section of users, including medical professionals and students, veterinarians and veterinary students, and consumers.
MDPI Open Access Journals
MDPI is a pioneer in scholarly open access publisher, supportind academic communities. MDPI fosters open scientific exchange in all forms, across all disciplines with 369 diverse, peer-reviewed, open access journals and more than 115,000 academic experts and serve scholars from around the world to ensure the latest research is freely available and all content is distributed under a Creative Commons Attribution License (CC BY).