Free Research AI Tools

ChatPDF is an AI-powered web app that lets you chat with PDFs and other documents to summarize, analyze, translate, and extract information with built-in citations. It targets researchers, students, and professionals and offers free and paid plans.

AskYourPDF is an AI-powered document assistant that lets users chat with, summarize, search, and manage PDF documents, fill PDF forms automatically, and embed an AI agent on websites. It offers apps, browser extensions, and integrations for academic and professional workflows.

Knowbase is an AI-powered knowledge base that turns documents, audio, video, and web content into a searchable AI assistant — offering document chat with clickable source citations, AI transcription with speaker diarization, and embeddable chatbot widgets for websites.

WebSearchAPI.ai is a web search and retrieval API for applications that need current information from multiple search engines and public communities. It can fetch page content, deduplicate and rerank results, and return search results, structured data, or grounded AI responses.

Bright Data is an all-in-one web data platform offering proxy infrastructure, web scraping APIs, pre-built scrapers, datasets, and data-delivery services designed for developers and enterprises to collect real-time, historical, and AI-ready web data at scale.

Pinecone is a fully managed vector database for building knowledgeable AI applications — providing fast retrieval, automatic indexing, and consistent query latency at production scale for search, recommendations, agents, and other embedding-powered workloads.

RealEye.io is a web-based research platform that provides webcam-based eye-tracking, attention and basic facial-emotion (facial coding) analysis for remote studies, targeted at researchers, universities and businesses.

Hugging Face is a machine‑learning community platform for hosting, sharing and deploying models, datasets and applications, plus developer tooling and enterprise compute and support.

A source‑grounded AI workspace for expert practitioners that converts large, mixed-format document libraries into production-ready artifacts (PDFs, spreadsheets, charts, bundles) with strict, traceable citations and multi-model support.