Cost / License
- Free
- Open Source (AGPL-3.0)
Platforms
- Online
- Self-Hosted
Flagship is described as 'Feature Flag as a Service - Separate code deployments from feature releases to speed up development cycles, mitigate risks and release safely' and is an app. There are more than 25 alternatives to Flagship for a variety of platforms, including Web-based, SaaS, Self-Hosted, JavaScript and Docker apps. The best Flagship alternative is Fecusio, which is free. Other great apps like Flagship are LaunchDarkly, DevCycle, Replane and ConfigCat.
OpenFlags is a lightweight, developer-first feature flagging platform designed to give teams full control over their release cycle without the "enterprise tax" or external dependencies. Built with Bun and TypeScript, it focuses on extreme performance, local evaluation...

DeployRamp automatically wraps your riskiest code changes in feature flags, rolls them out gradually, monitors for errors, and cleans up after itself — so your team ships faster without breaking production.
Hypertune is the most flexible platform for feature flags, A/B testing, analytics and app configuration. Built with full end-to-end type-safety, Git-style version control and synchronous, in-memory, local flag evaluation.