Search Tools
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Pinecone
Freemium
Pinecone is a managed vector database purpose-built for AI applications requiring similarity search at scale. It stores and indexes high-dimensional vector embeddings and returns nearest neighbours at low latency across billions of vectors. Pinecone powers RAG systems, semantic search, recommendation engines, and anomaly detection for AI applications. Its serverless architecture auto-scales with usage. Used by companies like Gong, Hubspot, and Notion to add semantic search and long-term memory to their AI features.
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Qdrant
Freemium
Qdrant is a high-performance open-source vector database and vector similarity search engine written in Rust. It provides fast nearest-neighbour search with filtering capabilities, sparse and dense vector support, and payload-based filtering for hybrid search. Qdrant supports on-disk indexing for datasets larger than RAM and offers a managed cloud service. Used in RAG pipelines, semantic search, recommendation systems, and anomaly detection where high throughput and low latency are critical.
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Coveo
Paid
Coveo is an AI-powered enterprise search and relevance platform that unifies search across websites, customer portals, intranets, and e-commerce. Its machine learning models personalise search results and product recommendations based on individual behaviour and intent. Coveo integrates with Salesforce, ServiceNow, SAP, and Sitecore to bring intelligent search to enterprise workflows. Used by Xero, Tableau, and Quest Diagnostics to improve self-service rates and reduce support ticket volume through better search relevance.
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Constructor
Paid
Constructor is an AI-first product search and discovery platform for e-commerce that optimises search results, browse pages, and recommendations to maximise revenue metrics rather than just relevance. Its machine learning models continuously learn from shopper behaviour to improve conversion rates. Constructor A/B tests ranking changes automatically and provides detailed analytics on search performance. Used by large retailers including Sephora, Backcountry, and Petco to drive measurable revenue lift from search optimisation.
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Lucidworks
Paid
Lucidworks is an enterprise AI search platform built on Apache Solr and Fusion that powers intelligent search and recommendations for employee and customer-facing applications. Its machine learning models handle query understanding, intent classification, and personalised result ranking. Lucidworks Smart Answers provides generative AI responses grounded in enterprise content. Used by LinkedIn, Lenovo, and Tennessee Valley Authority for enterprise knowledge search and customer self-service applications.
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Yext
Paid
Yext is an AI search platform that enables organisations to deliver direct, accurate answers from their own content rather than a list of links. Its Answers search technology uses NLP to understand natural language queries and return precise answers from structured knowledge graphs. Yext powers search for company websites, customer support portals, and employee intranets. Its listings management product ensures accurate business information across 200+ directories, maps, and voice assistants globally.
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Glean
Paid
Glean is an AI-powered enterprise search platform that searches across all company applications including Google Drive, Slack, Jira, GitHub, Salesforce, and Confluence to help employees find information instantly. Its AI understands user context, role, and permissions to surface the most relevant results. Glean Assistant uses retrieval-augmented generation to answer questions using company knowledge. Used by Duolingo, Databricks, and Rubrik to reduce time spent searching for information across fragmented enterprise tools.
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Vectara
Freemium
Vectara is an AI search platform built specifically for RAG (retrieval-augmented generation) applications. It provides an end-to-end pipeline for ingesting documents, creating vector embeddings, and performing hybrid semantic and keyword search with automatic hallucination reduction via its Grounded Generation technology. Vectara handles chunking, indexing, retrieval, and answer generation in a single managed API, simplifying RAG pipeline development for enterprise teams building AI search and Q&A applications.
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Brave Search
Freemium
Brave Search is an independent search engine with its own web index, not relying on Google or Bing for results. It offers an AI summariser, Discussions feature surfacing forum results, and Goggles for customisable ranking filters. The API provides programmatic access to web search results for developers building search-powered applications and AI agents that need real-time web data. Privacy-focused with no tracking, making it popular among privacy-conscious users and developers building privacy-respecting AI tools.
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Exa AI
Freemium
Exa (formerly Metaphor) is a search API built for AI applications that retrieves high-quality web content using neural search rather than keyword matching. It finds semantically similar pages, extracts full content from results, and filters by domain, date, and content type. AI developers use Exa to give LLMs access to current web information for RAG pipelines, research agents, and knowledge retrieval. Exa returns cleaner, more relevant results than traditional search APIs for AI use cases.
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Perplexity AI
Freemium
Perplexity AI is an AI-powered answer engine that combines real-time web search with large language models to provide cited, conversational answers to any question. Unlike traditional search engines that return links, Perplexity reads and synthesises sources to deliver direct answers with inline citations users can verify. Its Pro Search performs multi-step research for complex queries. Used by millions as a primary research tool and a faster, more accurate alternative to traditional search for knowledge queries.
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Kagi Search
Paid
Kagi is a premium, ad-free search engine that uses AI to deliver high-quality, unbiased search results without tracking or personalized advertising. It features AI-powered result summarization, personalizable result rankings, and web content lenses for academic, news, or technical searches. Users who are frustrated with ad-cluttered, SEO-gamed mainstream search results pay a monthly subscription to Kagi for a faster, cleaner, and more trustworthy search experience.
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