Snowball lets you quickly find and filter through papers using the snowballing method. Start with a core collection of papers, and find more by going through their citations and references.

Shibata is described as 'Web interface to access Yubetsu Shibata - The World's 11th Largest Scientific Database' and is a academic research tool in the education & reference category. There are more than 25 alternatives to Shibata, not only websites but also apps for a variety of platforms, including iPhone, Android Tablet, iPad and Android apps. The best Shibata alternative is Research Rabbit, which is free. Other great sites and apps similar to Shibata are Google Scholar, Inciteful, Litmaps and WorldCat.
Snowball lets you quickly find and filter through papers using the snowballing method. Start with a core collection of papers, and find more by going through their citations and references.

Search engine for tens of millions of preserved research papers. This fulltext search index includes over 25 million research articles and other scholarly documents preserved in the Internet Archive.

OA.mg is a search engine for academic papers. Whether you are looking for a specific paper, or for research from a field, or all of an author’s works – OA.mg is the place to find it.




RefSeek is a web search engine for students and researchers that aims to make academic information easily accessible to everyone. RefSeek searches more than five billion documents, including web pages, books, encyclopedias, journals, and newspapers.
This project is a web interface that attempts to tame the overwhelming flood of papers on Arxiv. It allows researchers to keep track of recent papers, search for papers, sort papers by similarity to any paper, see recent popular papers, to add papers to a personal library, and...

ArnetMiner (AMiner) is designed to search and perform data mining operations against academic publications on the Internet, using social network analysis to identify connections between researchers, conferences, and publications.




Thomson Reuters Web of KnowledgeSM is a research platform that gives you access to objective content and powerful tools to search, track, measure and collaborate in the sciences, social sciences, arts, and humanities.
Publish or Perish (PoP) uses Scopus, Crossref, Google Scholar, Microsoft Academic, and Web of Science queries to obtain citation information, which is then analysed and converted to a variety of metrics (see Appendix).
CiteSeerx is an evolving scientific literature digital library and search engine that has focused primarily on the literature in computer and information science.
Elsevier’s Scopus, the largest abstract and citation database of peer-reviewed literature. Search and access research from the science, technology, medicine, social sciences and arts and humanities fields.

ResearchLit is an AI-powered platform designed to help researchers discover code repositories linked to academic papers and generate summaries or insights from collections of papers.

Edison Platform is an AI-powered research and analysis hub that helps users explore literature, patents, clinical trials, and design new molecules with predictive chemical insights.



