The NBER's goal is to disseminate "unbiased economic research among public policymakers, business professionals, and the academic community." The database includes working papers and NBER publications. These are available freely online after two years.
Google's answer to scholarly searching. Wide-ranging, including links to articles, books, theses, student papers, and whatever else it deems scholarly.
A freely available online search. Includes an Abstract Database containing abstracts on over 302,200 scholarly working papers and forthcoming papers and an Electronic Paper Collection currently containing over 242,500 downloadable full text documents.
SciSpace seeks to be the place to find, understand, and learn any research paper. For every paper you read, get explanations and answers from AI and discover a network of connected and relevant papers in one place. No account required for free version.
Elicit seeks to help with each stage of paper collection and analysis: finding papers; screening papers for inclusion; and extracting data/findings from papers. Account required for free version.