Jitsu

Jitsu is a developer-centric, high-performance data collection platform designed as a robust open-source alternative to Segment and RudderStack. In the 2026 data landscape, Jitsu differentiates itself through its 'Cloud-Native, Warehouse-First' architecture, allowing engineering teams to capture, transform, and route millions of events per second with sub-millisecond latency. Built primarily in Go and TypeScript, it supports both client-side and server-side tracking via highly optimized SDKs. Jitsu’s core value proposition lies in its flexibility: it can be deployed as a fully managed SaaS or self-hosted via Docker/Kubernetes for strict data sovereignty. The platform features a sophisticated 'Transformations' engine that allows users to write custom JavaScript functions to enrich, mask, or filter data before it hits the destination. As AI-driven analytics become the standard in 2026, Jitsu provides the clean, structured event data necessary to train real-time ML models, ensuring that data warehouses like Snowflake, BigQuery, and ClickHouse remain the single source of truth without the vendor lock-in of traditional CDPs.