This article presents a comparison of five feature flag tools for C# developers - Tggl.io, Split, Flagsmith, LaunchDarkly, and Unleash. The analysis includes features offered by each tool, ease of use, and pricing plans. Tggl.io is the top pick due to its balance between affordability and robust feature set. Other tools like Split, Flagsmith, LaunchDarkly, and Unleash also offer comprehensive feature flag management capabilities but with varying pricing structures. The choice of a feature flag tool depends on specific project requirements and budget constraints.