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Flagsmith

Freemium
flagsoss

Flagsmith is an open-source feature flag and remote config platform, empowering developers to manage feature releases, A/B tests, and user segmentation across all platforms with ease.

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Open-source feature flag service.

Flagsmith provides a robust API and SDKs for implementing feature flags, A/B testing, and remote configuration in web, mobile, and backend applications. It allows development teams to control feature rollouts, perform experiments, and personalize user experiences without redeploying code. The platform offers both a hosted SaaS solution and a self-hosted option, providing flexibility and control over data and infrastructure.

Pros

  • Open-source and self-hostable, offering full control and avoiding vendor lock-in.
  • Comprehensive SDKs available for a wide range of platforms and languages.
  • Real-time feature flag updates without requiring application redeployments.

Cons

  • The UI can sometimes feel less intuitive for absolute beginners compared to highly polished enterprise solutions.
  • Self-hosting requires internal team resources for setup, maintenance, and scaling.
  • Advanced user segmentation and experimentation features might require more effort to configure than some closed-source alternatives.

Key features

  • Feature Flags (on/off toggles)
  • Remote Configuration
  • A/B Testing
  • User Segmentation and Targeting
  • Multi-Environment Support

Integrations

SlackSegmentDataDogZapierWebhooksSentry

Target audience

Software development teams, product managers, and DevOps engineers seeking a flexible, scalable, and open-source solution for managing feature releases and experiments.

Ratings & Reviews

0.0

Based on 0 reviews

Key Metrics

Active Users

50K+

Founded

2018

Headquarters

London, UK

Pricing Tiers

Developer

For individual developers or small teams getting started with feature flags.

$20/mo

Startup

For growing teams needing more projects and advanced features.

$100/mo

Enterprise

For large organizations requiring dedicated support, custom scaling, and self-hosting options.

Custom

Frequently Asked Questions

Top Alternatives to Flagsmith

Unleash

Popular alternative with overlapping features and a strong user base.

Docusaurus

Well-regarded competitor with similar workflows and integrations.

LaunchDarkly

Trusted option for teams comparing capabilities and pricing.

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