🦔 PostHog is the leading platform for building self-driving products. Our developer tools – AI observability, analytics, session replay, flags, experiments, error tracking, logs, and more – capture all the context agents need to diagnose problems, uncover opportunities, and ship fixes. Steer it all from Slack, web, desktop, or the MCP.

Open Source Feature Flags, Experimentation, and Product Analytics

Progressive delivery Kubernetes operator (Canary, A/B Testing and Blue/Green deployments)

Kubernetes deployment strategies explained

📈 The Rack Based A/B testing framework

Flagr is a feature flagging, A/B testing and dynamic configuration microservice

Enterprise-grade feature flag platform that you can self-host. Get started - free.

A multi-platform desktop application to evaluate and compare LLM models, written in Rust and React.

Feature flags, experiments, and remote config management with version control

A GitOps recipe for Progressive Delivery with Flux v2, Flagger and Istio

Feature Flag Management and A/B Testing platform

Proctor is a Java-based A/B testing framework developed by, and used heavily within, Indeed.

Simple declarative and universal A/B testing component for React.

Tweek - an open source feature manager

Open-source Python library for statistical analysis of randomised control trials (A/B tests)

A Python package for the statistical analysis of A/B tests

React components for implementing UI experiments

A simple, progressive, client/server AB testing library 📚

🐢 bayesAB: Fast Bayesian Methods for A/B Testing

A JavaScript port of Facebook's PlanOut Experimentation Framework