Here are the top 3 alternative websites to Semantic Scholar, chosen for their coverage, search capabilities, and access to academic papers:

1.Google Scholar

• Why its a top alternative: The most comprehensive academic search engine. It indexes a broader range of materials than Semantic Scholar, including preprints, institutional repositories, patents, and court opinions. It is often the first stop for many researchers.
• Key features: Citation tracking, "Related articles" feature, library link integration, and profile creation.
• Best for: Broad, interdisciplinary searches and checking citation counts across many fields.

2.Crossref

• Why its a top alternative: Unlike user-facing search engines, Crossref is the official DOI registration agency for scholarly publications. Its metadata is what powers citation linking in Semantic Scholar and others. Using its Metadata Search or Plus service gives you direct, authoritative, and unfiltered access to millions of journal articles, conference papers, and books.
• Key features: Extremely clean, reliable metadata; ability to see which papers have updated versions (e.g., corrections or retractions); integration with many other tools via API.
• Best for: Finding the definitive, citable record of a paper and checking its official metadata.

3.Lens.org

• Why its a top alternative: Developed by the non-profit organization behind the patent database "The Lens." It combines scholarly literature with global patent data, offering powerful visual analytics and search filters that Semantic Scholar lacks.
• Key features: Uniquely maps the connection between academic papers and patents; provides detailed citation graphs and research impact dashboards; bulk downloading of results.
• Best for: Patent searching, analyzing the applied impact of research, and visual literature mapping.

Honorable Mentions: PubMed (for biomedical literature) and CORE (for open access papers only).