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Free and Open Source Components

The majority of Flipt v2 remains free and open source, including:
  • Core feature flag evaluation engine
  • Dashboard and UI
  • Multi-environment support
  • Branch environments
  • Git-backed storage and sync
  • Authentication mechanisms
  • Real-time client updates

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Feature Comparison: Free vs Pro

Feature CategoryFreeProNotes
Core Functionality
Feature flag evaluation engine✅✅Full functionality in both
Dashboard and UI✅✅Complete interface
Multi-environment support✅✅Unlimited environments
Branch environments✅✅Git-based branching
Git-backed storage and sync✅✅Full Git integration
Authentication mechanisms✅✅OIDC, token-based
Real-time client updates✅✅Server Sent Events (SSE) support
Advanced Workflows
Enterprise DevOps Integration❌✅GitHub, GitLab, BitBucket, Azure DevOps, Gitea
Merge proposals with SCM❌✅Automated PR/MR creation
GPG commit signing❌✅Cryptographic verification
Security & Operations
Integrated secrets management❌✅HashiCorp Vault integration. AWS Secrets Manager, GCP Secret Manager, Azure Key Vault support coming soon
Air-gapped environment support❌✅Offline license validation
Enterprise authentication providers❌🔄Coming soon
Advanced analytics and reporting❌🔄Coming soon
Support
Community support✅✅Discord, GitHub issues
Dedicated support channel❌✅Direct Slack access
Priority bug fixes❌✅Faster resolution
Priority feature requests❌✅Influence roadmap

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Pro Licensing

Pro features are protected by license key validation and cannot be accessed without a valid license. For detailed information about Pro features and purchasing options, see our Flipt Pro page.

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SDK and Integration Licensing

All Flipt SDKs and client libraries remain MIT licensed, ensuring that:
  • Your application code using Flipt SDKs has no licensing restrictions
  • You can integrate Flipt into commercial applications freely
  • There are no licensing concerns for end-user applications
This includes:
  • All language-specific SDKs (Go, Python, Node.js, etc.)
  • OpenFeature providers
  • Integration libraries and tools

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Fair Core License

Flipt v2 is licensed under the Fair Core License (FCL). The Fair Core License is a Fair Source license specifically designed for self-hosted software that balances developer sustainability with user freedom. It’s a mostly-permissive non-compete license that eventually transitions to Open Source after 2 years.

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What the FCL Allows

Under the Fair Core License, you can:
  • Read, use, modify, and redistribute the Flipt source code
  • Use Flipt for any purpose that doesn’t compete with Flipt’s business interests
  • Self-host and deploy Flipt in your infrastructure
  • Modify the code to suit your needs

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What the FCL Restricts

The FCL restricts competing uses, which means you cannot:
  • Create a competing cloud or SaaS offering using Flipt
  • Offer Flipt as a managed service to third parties
  • Remove or circumvent license checks for commercial features

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Transition to Open Source

After 2 years from each software version’s release, that version automatically becomes available under an Open Source license (MIT), ensuring long-term access and community benefit.

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Why We Chose the Fair Core License

The Fair Core License allows us to:
  • Share our entire codebase in a single repository under a single license
  • Maintain sustainable development while keeping core functionality free
  • Ensure all features eventually become Open Source
  • Protect our ability to offer commercial services while respecting user freedom

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Important Restrictions

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License Compliance

When using Flipt v2, you must not:
  • Remove or modify license checks in the source code
  • Attempt to circumvent license protection mechanisms
  • Distribute modified versions that bypass commercial feature restrictions
  • Use Flipt to create competing feature flag services

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Commercial Use Guidelines

For most users and organizations, Flipt v2 can be used freely in commercial environments. The restrictions primarily apply to companies wanting to compete directly with Flipt’s business model.

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Questions?

If you have questions about licensing or whether your use case requires a commercial license, please: