Best Feature-flags tools and stacks in 2026

Hand-picked feature-flags stacks for founders, indie makers, and small teams. Each stack lists the exact tools, maps the integrations, and walks through setup step by step. Pick one and start shipping.

• Run A/B tests on your site — Stop guessing what works. Test it with real users and let the data decide.
• Set up feature flags — Ship features without sweating the launch. Roll out gradually, kill instantly if needed.