GrowthBook Experimentation Platform

An open-source warehouse-native experimentation and feature flag platform with 7,913 GitHub stars, trusted by over 3,000 companies including Dropbox, Khan Academy, Quizlet, Sony, Wikipedia, Pepsi, LA Times, and Mistral AI. The platform processes more than 100 billion feature flag evaluations daily and enables teams to run five times more experiments at one-fifth the cost of alternatives. The warehouse-native architecture connects directly to existing data warehouses including Snowflake, BigQuery, Redshift, Databricks, and ClickHouse, eliminating the need to duplicate or transfer experiment data. Statistical methods include CUPED variance reduction, sequential testing for early stopping, multi-armed bandits for automated optimization, and holdout groups for measuring cumulative impact. Over 24 SDKs cover every major language and framework, with packages averaging 50% smaller than competitors and making zero network calls during evaluation for edge-compatible performance. A visual editor Chrome extension enables non-technical team members to create and modify experiments without code changes, while an AI analyst module answers product analytics questions through natural language queries. An MCP server integrates with Claude Code, Cursor, VS Code, and Codex for developer workflow automation. SOC 2 Type II certified and compliant with GDPR, CCPA, and COPPA regulations, with self-hosted deployment available for organizations requiring full data sovereignty.