Research

Search, synthesis & analysis

24 tools

Rank by

Pricing

★ Featured

Perplexity AI

An AI-powered answer engine that responds to questions with cited sources drawn from live web results.

searchcitationsreal-time

freemium

Claude

A general-purpose AI assistant by Anthropic, designed for writing, analysis, coding, research, and extended reasoning across very long documents.

reasoninglong documentsanalysis

freemium

Google Gemini

Google's flagship multimodal AI assistant with deep integration into Search, Workspace, and YouTube, capable of analyzing documents, images, and code with real-time web access.

multimodalGooglesearch

freemium

NotebookLM

Google's AI research assistant that lets you upload your own documents and ask questions directly against them, generating cited summaries and podcast-style audio overviews.

Googledocumentsaudio overview

freemium

Microsoft Copilot

Microsoft's AI assistant integrated into Windows, Edge, and Bing, providing web-grounded answers, image generation, and document analysis — free with a Microsoft account.

Microsoftweb searchdocuments

free

Semantic Scholar

A free AI-powered academic search engine from the Allen Institute for AI indexing 200M+ papers, with semantic search, citation graphs, and personalized research feeds.

academic searchpaperscitations

freemium

You.com

An AI search engine combining live web search with a conversational assistant, offering cited answers, model switching, and deep research agents.

AI searchcitationscode execution

freemium

Grok

An AI assistant by xAI with real-time access to X (formerly Twitter) data, making it strong for current events, trending topics, and social sentiment research.

real-timeXTwitter

free

Mendeley

A free reference manager and academic social network by Elsevier that organizes papers, generates citations, and connects researchers through a shared library of 100M+ papers.

reference managercitationsPDF

freemium

Elicit

A research assistant that searches and synthesizes findings from academic papers, with structured evidence tables and systematic review workflows.

academicpapersliterature review

freemium

Consensus

A search engine for peer-reviewed research that uses AI to synthesize whether scientific evidence supports, contradicts, or is mixed on a claim.

sciencepeer-reviewedevidence

freemium

ChatPDF

An AI tool that lets you upload any PDF and ask questions about its content, useful for extracting information from papers, reports, and manuals quickly.

PDFdocument Q&Asummaries

free

ResearchRabbit

A free literature discovery tool that maps academic papers as an interactive network and recommends related works, syncing with Zotero for reference management.

literature discoverycitation graphZotero

freemium

Scite

A citation intelligence platform that shows how papers have been cited — whether supporting, contrasting, or just mentioning a finding.

citationsfact-checkingacademic

freemium

Connected Papers

A visual tool that builds a graph of related research papers, helping researchers discover connected work and trace how ideas evolved.

visual graphrelated papersdiscovery

freemium

Litmaps

A visual academic research tool that builds interactive citation maps around seed papers and sends alerts when new related work is published.

citation mapsvisualliterature review

freemium

Undermind

An AI research assistant that performs deep multi-step literature searches and synthesizes findings from thousands of papers into a coherent cited report.

deep researchsynthesisacademic

free

Scinapse

A free academic paper search engine indexing 270M+ papers with high-quality metadata, reference lists, and journal-level analytics.

academic searchpapersfree

freemium

Dimensions

A research intelligence platform linking publications, grants, patents, datasets, and clinical trials in one database, used by universities and funders to measure impact.

research intelligencegrantspatents

freemium

Paperpal

An AI academic writing assistant that helps researchers write, paraphrase, and polish manuscripts to meet journal submission standards, built on models trained on millions of research papers.

academic writingmanuscriptparaphrasing

freemium

Scholarcy

An AI reading assistant that converts academic papers into structured flashcard summaries, extracting key findings, methods, and reference lists.

papersflashcardssummaries

paid

Iris.ai

An enterprise AI knowledge platform for regulated industries that builds agentic RAG systems to help R&D teams extract insights from large internal document sets.

enterpriseR&DRAG

paid

Genei

An AI research productivity tool that automatically summarizes PDFs and web pages and extracts key information, helping researchers process large volumes of material.

PDF summarieskeyword extractionresearch

free

Inciteful

A free academic paper discovery tool that builds a citation network from any seed paper and surfaces the most important and connected research in the graph.

citation networkpaper discoveryfree