Open Access (OA), also known as public access, is a type of unrestricted access to scholarly publications that is online, free of charge to everyone and free of most copyright and licensing restrictions. The goals of OA include making taxpayer-funded research available to all people regardless of their socio-economic status and having scholarship accessible to scholars and researchers in developing countries and at low-funded institutions.
For more information on Open Access, including the different types and models of OA, see our Open Access resource guide.
Open Educational Resources (OER) are "teaching and learning materials that you may freely use and reuse at no cost, and without needing to ask permission" (OER Commons's About page).
Open Source Programs are "software with source code that anyone can inspect, modify, and enhance" (What is open source software?).
For more information on preprint servers, see our blog post on finding the right place for your preprints (internal LANL users only).