FeatBit
Open-source feature flags with enterprise-grade controls
About FeatBit
FeatBit is an open-source feature flag management platform that enables development teams to control feature releases independently from code deployments. It supports progressive rollouts, A/B testing, and targeted user experiences with advanced segmentation, handling over 1 million simultaneous users.
Pros & Cons
Pros
- Generous free tier with unlimited flags, environments, team members, and MAU
- Fully open source under MIT license with no vendor lock-in
- High performance built in C# supporting 1M+ simultaneous users
- Flexible deployment via Docker, Kubernetes, Helm, and major cloud providers
- A/B testing and advanced targeting included free — not paywalled
- Up to 20x cost reduction compared to proprietary alternatives like LaunchDarkly
Cons
- Self-hosting requires Redis, MongoDB, Kafka, and ClickHouse — adds operational overhead
- Smaller community at 1.8k GitHub stars compared to Unleash or Flagsmith
- Managed SaaS offering is newer and less established
- SSO and advanced RBAC require the \u00243,999/year enterprise plan
Key Features
Feature Flag Management
Create, manage, and toggle feature flags with real-time updates across unlimited environments
Advanced Targeting & Segmentation
Roll out features to specific user segments using custom attributes and reusable audience groups
A/B Testing & Experimentation
Run experiments with real-time results for data-driven product decisions
Progressive Rollouts
Gradually release features to increasing user percentages to mitigate deployment risk
Multi-Language SDKs
Client and server SDKs for JavaScript, React, .NET, Java, Python, Go, Node.js, PHP, and Ruby
Self-Hosted Deployment
Deploy via Docker, Kubernetes, Helm Charts, Terraform, or Azure Container Apps
Feature Workflows
Automate flag lifecycle with triggers, scheduling, and approval request workflows
Audit Logging
Track all flag changes with full audit trails for compliance and debugging
Third-Party Integrations
Webhook integrations with Datadog, New Relic, Grafana, Slack, and more
Pricing
- Unlimited flags, environments, team members, MAU
- Advanced targeting
- A/B testing
- REST API & SDKs
- Community support
- Everything in Free
- SSO
- Advanced workflows
- IAM with RBAC
- Priority support
- 12-hour SLA
- Managed cloud hosting
- 99.95% uptime SLA
- All open-source features
Best For
Progressive Feature Delivery
Gradually roll out features to increasing user percentages, starting at 1% to catch issues early
A/B Testing & Experimentation
Run controlled experiments on UI changes or algorithms to optimize product decisions
Production Testing
Safely test features in production by targeting internal users or beta testers
Entitlement Management
Control feature access based on subscription tiers without code changes
Remote Configuration
Change application behavior in real-time without redeployment for kill switches or maintenance modes
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Featured In
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