Algolia

Algolia is a hosted search and discovery platform that developers integrate through an API to add fast, relevant search to a website, app, or online store without running their own search infrastructure. Content is pushed to Algolia's index, and it returns results in a few milliseconds as a user types, with typo tolerance, synonyms, filtering and faceting, and configurable ranking that lets a business tune which results surface. Its NeuralSearch capability blends traditional keyword matching with vector-based semantic understanding in a single API so queries phrased in natural language still return good results, and the platform layers on merchandising controls, personalization, recommendations, A/B testing, and analytics that show what people search for and where searches fail. Algolia also provides an inference API and retrieval tooling aimed at powering conversational and agent-driven experiences on top of a company's own data. It is widely used across e-commerce, media, software documentation, and SaaS products, and analysts rank it among the leaders in search and product discovery. Algolia offers a free Build plan with a monthly quota of records and searches, and usage-based paid plans that scale with search volume and add advanced AI, personalization, and support.