AI

Limited free access to scientific papers. Type in a question and papers provided rate whether the paper comes from a highly rated journal. Results also note what kind of scientific study it is and have short summary of the study. Limited "credits" on the free version.

You can use Elicit for free although you do have to create an account. You can get summaries of the top 4 papers. Papers come from Semantic Scholar which searches only freely available papers.

Analyzes a PDF of an article that you input to find similar articles. Utilizes data/papers from OpenAlex. Tool says it only uses the PDF article to find similar articles, does not keep the data from the article.

Basic version is free. Choose an academic article on your topic that is generated in the search tool and then LitMaps maps to related articles.

In free version, can do up to 5 searches per day. Tool can provide summaries on topics and does cite sources. Sources are all from freely available web content. Co-Pilot asks follow-up questions which can help narrow the scope of the user's search.

Research Rabbit is a free online “citation-based literature mapping tool." The tool allows users to create collections based on their research focus. You can start by looking up a title, DOI, PMID, or keywords, find the paper in the results, and add it to your collection. Research Rabbit will find similar papers, the cited works in the paper you input as well as papers that cite the paper that you inputed. Research Rabbit also creates visual maps with relationships between the papers.

SciSpace provides access to over 200 million research papers. You ask a question and then it provides citations along with relevant pieces summarized for your question from the article.

Semantic Scholar indexes over 200 million research papers covering science topics. It is best to start your search with some keywords.