Search / Recommendations API Tools

AddSearch — Hosted site search API with a crawler, relevance tuning, and analytics for websites and docs.

Ahrefs — CI/CD for Applications tool for developers. Specializes in SEO Tools.

Algolia — Hosted search API with typo-tolerance, faceting, and relevance tuning for e-commerce and SaaS.

Allstays hotel/travel search APIs aggregating 2M+ Korean and global accommodations.

Bleve — CI/CD for Applications tool for developers. Specializes in Search Engine.

Bloomreach — Commerce experience platform with search, merchandising, and personalization APIs for e-commerce.

Bonsai — Managed Elasticsearch and OpenSearch hosting with automated backups and monitoring.

Brave Search API — Independent search index API free of Google/Bing data, offering web search with privacy focus.

BeProuds Japanese tech-event platform — REST API for event listings, groups and RSVPs across meetups.

AI academic search engine that synthesizes peer-reviewed research to surface the scientific consensus on questions.

AI-native search and recommendations API for e-commerce, with personalization, merchandising, and behavioral ranking built in.

Coveo — AI-powered search and recommendations platform for enterprise portals, e-commerce, and support sites.

AI enterprise search and knowledge assistant that federates across 100+ SaaS apps without indexing for real-time answers.

Doofinder — E-commerce search API with autocomplete, faceted search, and product recommendations.

Tokyo-based event-management SaaS for Japanese tech communities — REST API for events, tickets, members.

Dub — CI/CD for Applications tool for developers. Specializes in Link Management.

Dynamic Yield — Personalization platform with AI recommendations, A/B testing, and content targeting.

Elasticsearch — Distributed full-text search and analytics engine built on Apache Lucene with a REST API.

AI research agent for scientific literature review across 125M+ papers with extraction and synthesis workflows.

fd — CI/CD for Applications tool for developers. Specializes in Fast Find.

Frase — CI/CD for Applications tool for developers. Specializes in SEO Research.

Federated AI enterprise search across all SaaS apps with low TCO and no indexing infrastructure.

Hawksearch — Enterprise site search platform with semantic search, merchandising rules, and faceted navigation.

Klevu — AI-native search and product discovery platform for Shopify and other e-commerce platforms.

Loadstone — AI search infrastructure platform for building semantic and hybrid search into applications.

Luigi's Box — E-commerce search, autocomplete, and product recommendations platform with analytics.

Manticore Search — CI/CD for Applications tool for developers. Specializes in Search Engine.

Meilisearch — Open-source fast search engine with typo-tolerance, filters, and a simple REST API.

Tokyo memorization-as-a-service used by 5k+ schools — open API for custom content ingest and progress sync.

OpenSearch — CI/CD for Applications tool for developers. Specializes in Search & Analytics.

Orama — CI/CD for Applications tool for developers. Specializes in Search Engine.

Pinecone — Managed vector database for storing and querying high-dimensional embeddings for AI applications.

Qdrant — Search / Recommendations API tool for developers. Specializes in vector database.

Japans largest engineer knowledge-sharing community — OAuth-protected API for articles, tags and user data.

Quickwit — Search / Recommendations API tool for developers. Specializes in Log Search Engine.

Recombee — Recommendation engine API using collaborative filtering and content-based algorithms for personalization.

ripgrep — CI/CD for Applications tool for developers. Specializes in Fast Search.

SearchApi — Search / Recommendations API tool for developers. Specializes in search api.

Searchly — Hosted Elasticsearch-as-a-service with automated scaling and developer-friendly onboarding.

Searchspring — E-commerce search, merchandising, and personalization platform for Shopify and BigCommerce.

Semrush — CI/CD for Applications tool for developers. Specializes in SEO Platform.

SerpApi — Search / Recommendations API tool for developers. Specializes in search api.

Shaped.ai — Real-time AI recommendations API for ranking feeds, search results, and related content.

Solr Cloud — Distributed mode of Apache Solr for scalable enterprise search with sharding and replication.

Sonic — CI/CD for Applications tool for developers. Specializes in Search Engine.

Surfer SEO — CI/CD for Applications tool for developers. Specializes in Content Optimization.

Swiftype — Enterprise site search platform (now Elastic App Search) with crawler and relevance tuning.

Tantivy — CI/CD for Applications tool for developers. Specializes in Search Engine.

Tavily AI — CI/CD for Applications tool for developers. Specializes in AI Search API.

Trieve — Search / Recommendations API tool for developers. Specializes in AI Search.

Typesense — Open-source typo-tolerant search engine with instant sub-50ms search and easy self-hosting.

VATRIXs vector-search and RAG infrastructure for Korean enterprise knowledge bases.

Vespa — Open-source big data serving engine for real-time ranked search, recommendations, and ML inference.

Weaviate — Open-source vector database with hybrid search, multi-modal support, and GraphQL/REST APIs.

Websolr — Search / Recommendations API tool for developers. Specializes in Hosted Solr.

Wisenuts Korean enterprise search, chatbot and analytics APIs used across government and finance.

Xapian — CI/CD for Applications tool for developers. Specializes in Search Engine.

LY Corporations developer portal — search, maps, shopping, Kakaku and Japanese-morphology text APIs.

Yext — AI search platform for structured data, site search, and knowledge graph management.

Classmethods paid-article & book platform for Japanese engineers — markdown-first with public user/feed APIs.

Zinc — CI/CD for Applications tool for developers. Specializes in Search Engine.