Recall is a free AI knowledge base that summarizes articles, YouTube videos, podcasts, and PDFs, then organizes everything into a self-connecting knowledge graph you can chat with.
TLDR This is a free AI text summarizer that condenses articles, PDFs, and web pages into key-point summaries — browser extensions available, paid Starter plan from $4/month.
iAsk.AI is a free AI search engine trained on authoritative sources that delivers instant, unbiased factual answers — Pro plan at $9.95/month adds document analysis and image generation.
SiteExplainer is a free AI website summarizer built by Michael Chomsky that analyzes any URL and returns a plain-language breakdown of a site's purpose, services, and audience.
Komo Search is an AI-powered search engine with Chat, Explore, and Search modes that delivers generative AI answers with verified citations — free tier available, paid from $8/month.
MapDeduce is an AI document analysis tool that processes PDF, DOCX, PPTX, and TXT files up to 500 pages, flags contract red terms, and answers questions in any language.
NeevaAI was an ad-free, AI-powered private search engine that shut down in June 2023 and was acquired by Snowflake for $185.4M to power enterprise data search experiences.
ChatPDF lets you upload any PDF and ask questions in plain language, receiving cited answers drawn directly from the document — free for casual use, Plus at $19.99/month.
Elicit is an AI research assistant that searches 200M+ academic papers, automates literature reviews, and extracts structured data for systematic research workflows.
Embedditor is a free open-source tool for optimizing vector embeddings in LLM applications, using TF-IDF NLP cleansing to reduce search costs by up to 40% and improve retrieval accuracy.
Scholarcy is an AI article summarizer that converts academic papers, reports, and book chapters into interactive flashcards with key findings, citations, and highlighted sections.
Lookup is a free AI-powered search tool that queries multiple data platforms simultaneously, returning contextually ranked results from all your connected sources in one place.