engrXiv provides a free and publicly accessible platform for engineers and engineering researchers to upload working papers, pre-prints, published papers, data, and code. engrXiv is dedicated to open dissemination of engineering knowledge, to reach more people more effectively, to improve research, and build the future of scholarly communication

This database brings together compiled legislative histories, CRS reports, Congressional hearings, United States Supreme Court briefs, monographs, and other related materials on the difficult and controversial topic of regulating firearms in the United States.

With the Native Plants of North America Database, search for plants by either their common or scientific names, and the advanced search feature allows searches by combinations of fields such as light requirements, size, and bloom characteristics. This resource also features numerous helpful plant lists; for example, "Bee-friendly Plants" and "Plants for Drought," as well as lists of recommended native plants for nearly every US state and Canadian province. The listings for individual plant species include an image gallery and provide information, such as its scientific name and USDA classification, as well as helpful information for gardeners, for instance, its preferred growing conditions and maintenance tips. Each species listing also contains extensive information on the various benefits that plant offers, like whether it is resistant to deer and if it is of special value to beneficial insects (e.g. native bee species). Those interested in gardening with native flowers would do well to pay this resource a visit.

OregonFlora, the Oregon Flora Project website, presents information about the ~4,650 vascular plants of Oregon. Interactive mapping of plant occurrences (>540,000 records), a photo gallery (>46,000 images), and a checklist of plants and their nomenclature provide curated biodiversity information for plant scientists, restorationists, land managers, natural resource policy makers, and native plant gardeners. Plant occurrence data are from herbarium specimens, unvouchered observations, and field photographs.

PsyArXiv allows scholars to post documents such as working papers, unpublished work, and articles under review (preprints), making them accessible to other researchers and to the public at no cost. Users can also upload revisions of their posted document and supplemental documents such as appendices.

SHARE is a higher education initiative whose mission is to maximize research impact by making a comprehensive inventory of research widely discoverable, accessible, and reusable. To fulfill this mission SHARE is creating an openly available data set about research activities across their life cycle. SHARE is a partnership between the Association of Research Libraries (ARL) and the Center for Open Science (COS), underwritten in part by generous funding from the Institute of Museum and Library Services (IMLS) and the Alfred P. Sloan Foundation.

SocArXiv, open archive of the social sciences, provides a free, non-profit, open access platform for social scientists to upload working papers, preprints, and published papers, with the option to link data and code. SocArXiv is dedicated to opening up social science, to reach more people more effectively, to improve research, and build the future of scholarly communication.