Glean

Glean is a sophisticated AI-native search and knowledge discovery platform designed for enterprise-scale deployments. By 2026, Glean has evolved beyond simple federated search into a central AI Operating System for the workplace. Its architecture utilizes a continuous, permission-aware indexing engine that connects to over 100 SaaS applications (Slack, Jira, Salesforce, GitHub, etc.) while strictly honoring existing access control lists (ACLs). Technically, Glean leverages a hybrid search approach, combining traditional keyword retrieval with dense vector embeddings to provide highly accurate Retrieval-Augmented Generation (RAG). Its core strength lies in its ability to synthesize cross-silo data into actionable insights via Glean Chat, ensuring that generative responses are grounded solely in the organization's verified internal data. This eliminates hallucinations within corporate environments. The platform is built for security-first organizations, offering SOC2 Type II, HIPAA compliance, and data residency options, making it the dominant player in the AI-enhanced knowledge management sector for the 2026 market.