Curated AI Category Index

AI Search & Knowledge Engines

AI-first search engines, real-time citation research, scholarly search, and web knowledge synthesizers.

Popular Subcategories:Web ResearchScholarly SearchCited AnswersLive Data Scraping

Featured AI Search & Knowledge Engines (9)

Hand-picked and verified artificial intelligence apps with transparent pricing and traffic analytics.

All AI Tools

Where knowledge begins: Conversational AI search with live web citations

Perplexity answers queries by searching the live web in real time, synthesizing clear answers, and citing each fact with clickable source footnotes.

Freemium90M/mo4.9
#Search Engine#Citations#Live Web

Enterprise knowledge assistant with verifiable citations

Cohere Coral is an enterprise-grade conversational AI that connects securely to proprietary databases, delivering factual answers backed by verifiable source citations.

Paid1.9M/mo4.7
#Enterprise#RAG#Citations

AI-first search engine specifically built for software engineers

Phind answers programming questions with code solutions, debugging tips, and direct links to official framework documentation, GitHub issues, and community threads.

Freemium7.8M/mo4.8
#Developer Search#Code Explanations#Documentation

The search API built specifically for autonomous AI agents and LLMs

Tavily provides a high-speed search and factual research API designed specifically for LLMs and autonomous agents, delivering clean, synthesized, citation-backed web data.

Freemium1.8M/mo4.9
#Search API#AI Agents#RAG

AI search engine and productivity assistant with specialized modes

You.com is an AI-powered conversational search engine with customized modes (Smart, Genius, Research, and Create) to draft code, summarize academic papers, and generate media.

Freemium14M/mo4.7
#AI Search#Research Mode#Genius Mode

Ad-free, non-commercial AI answer engine for power researchers

Kagi FastGPT provides rapid, cited, hallucination-free answers synthesized from high-quality web sources without tracking, advertising, or sponsored affiliate links.

Paid6M/mo4.9
#Ad-Free#Research#Search

Autonomous AI search engine generating custom Sparkpages

Genspark uses multiple AI agents to research, verify, and cross-reference multiple web sources simultaneously, generating comprehensive, interactive Sparkpage dossiers.

100% Free14M/mo4.8
#AI Search#Sparkpages#Multi-Agent

Cross-language conversational AI search engine

Felo AI searches the global web in multiple languages simultaneously, translating and synthesizing foreign-language sources into your native tongue with clear citations.

Freemium8M/mo4.7
#Cross-Language#Search#Translation

The search engine built specifically for AI agents and LLMs

Exa is an embeddings-based semantic search API that lets AI agents retrieve raw web content, clean markdown, and highly relevant research links by meaning rather than keywords.

Freemium3.2M/mo4.9
#Search API#Embeddings#AI Agents