The article presents a comparison of five feature-flag solutions for NestJS developers. Tggl.io is ranked first due to its excellent NestJS SDK, user-friendly interface, and affordable pricing. Unleash, LaunchDarkly, Flagsmith, and Split follow in the ranking, each offering unique features and varying levels of ease of use and pricing. The article provides video demonstrations for each tool, allowing developers to compare their performance directly. Ultimately, the best choice will depend on individual project requirements and team size.