9 Best Open Source Bucket Alternatives
A curated collection of the 9 best open source and self-hosted alternatives to Bucket in 2026.
Looking for a free, privacy-friendly, or self-hosted replacement for Bucket in 2026? The top open-source alternative is Unleash — Enterprise feature management platform with flags and kill switches.
Other highly rated open-source Bucket alternatives include GrowthBook, Flagsmith and Flipt.
Enterprise feature management platform with flags and kill switches
Unleash is the FeatureOps Control Plane built for enterprises, providing open-source, private, and secure feature management. It enables teams to move fast while maintaining safety and governance over both AI-generated and human-written code. - Feature Flags & Kill Switches: Real-time control over feature releases with instant rollbacks - Gradual Rollouts: Progressive feature delivery with A/B testing and experimentation - Audit & Compliance: Full audit trails, SOC2, ISO27001, and FedRAMP compliance - AI-Generated Code Safety: Governance and control for AI-written software - Enterprise Scalability: Designed for large-scale deployments with high performance - Multi-Environment Support: Manage features across development, staging, and production - SDKs & Integrations: 25+ SDKs for seamless integration with existing systems - Self-Hosting Options: Deploy on-premises or in your preferred cloud environment Unleash is open-source (MIT licensed) and can be self-hosted using Docker, Kubernetes, or directly on bare metal. The platform supports PostgreSQL, MySQL, and other databases. Enterprise features are available through Unleash Enterprise, which offers additional security, support, and compliance capabilities.
Powerful, developer-friendly experimentation tool for data-driven product decisions. Seamless integration, real-time insights, and flexible deployment.
Powerful, developer-friendly experimentation tool for data-driven product decisions. Seamless integration, real-time insights, and flexible deployment.
Powerful feature management platform for seamless software releases, A/B testing, and personalized user experiences.
Powerful feature management platform for seamless software releases, A/B testing, and personalized user experiences.
A feature flag platform that integrates with Git workflows, enabling developers to manage features directly in their codebase.
A feature flag platform that integrates with Git workflows, enabling developers to manage features directly in their codebase.
FeatBit is a fast, scalable feature flag service that enables risk mitigation and fosters business growth through controlled feature releases.
FeatBit is a fast, scalable feature flag service that enables risk mitigation and fosters business growth through controlled feature releases.
Featurevisor is an open-source tool for managing feature flags, experiments, and remote configuration directly from your Git repository.
Featurevisor is an open-source tool for managing feature flags, experiments, and remote configuration directly from your Git repository.
Open-source feature flags, remote config, and A/B testing for developers
Abby is an open-source platform designed to help developers manage feature flags, remote configurations, and A/B tests with ease. It provides a simple yet powerful way to control feature rollouts, experiment with different configurations, and optimize applications without redeploying code. - Feature Flags: Toggle features on/off dynamically without redeploying your application. - Remote Config: Adjust application behavior in real-time by modifying configurations remotely. - A/B Testing: Run experiments to compare different versions of features and determine the best-performing variant. - Developer-Friendly: Built with developers in mind, offering seamless integration with modern tech stacks. - Self-Hostable: Deploy Abby on your own infrastructure for full control over data and privacy. - Open Source: Free to use, modify, and contribute to under an open-source license. Abby is designed to be self-hosted, allowing you to run it on your own servers or cloud infrastructure. It supports modern deployment practices and can be integrated into CI/CD pipelines for automated feature management. The platform is built with a focus on simplicity, scalability, and developer experience.
Self-driving product analytics platform
PostHog is an all-in-one product analytics platform that transforms how teams understand and improve their products. By automatically diagnosing problems, fixing bugs, and generating pull requests, PostHog enables teams to work smarter and ship faster. - Automated Issue Detection: Identifies bugs and issues in your product automatically - AI-Powered Fixes: Generates pull requests to resolve detected problems - Context Warehouse: Centralized data warehouse for all product and customer data - Built-in Analytics Tools: Includes product analytics, web analytics, session replay, feature flags, experiments, surveys, and error tracking - AI Observability: Monitor and optimize AI model performance within your product - Self-Hosting Capabilities: Deploy PostHog on your own infrastructure - Slack Integration: Collaborate and triage issues directly from Slack - Managed Warehouse: Cloud-hosted data warehouse option available - No-Code A/B Testing: Run experiments without writing code - Heatmaps & Replay Vision: Visualize user interactions and behavior - CDP (Customer Data Platform): Unify customer data across sources - Traces & Endpoints: Monitor API performance and integrations PostHog is open-source and can be self-hosted on your own infrastructure. It supports deployment on various cloud providers and on-premises environments. The platform is built with Python and JavaScript, using PostgreSQL as its primary database. Comprehensive documentation is available for self-hosting configurations and best practices. View deployment options
Open source expense splitter for friends
SplitPro is a free, open-source expense splitter designed to simplify shared expenses with friends and groups. Whether you're splitting bills, rent, or travel costs, SplitPro makes it easy to track who owes what. - Groups and Friends: Create multiple groups or add balances directly for consolidated tracking. - Multi-Currency Support: Add expenses in different currencies for the same user without hassle. - Unequal Splits: Advanced split options including shares, percentages, or exact amounts. - PWA Support: Install as a Progressive Web App for a mobile-like experience. - Receipt Uploads: Attach receipts to expenses for better record-keeping. - Open Source: Fully transparent and self-hostable for privacy and control. - Import from Splitwise: Easily migrate existing users and groups from Splitwise. - Push Notifications: Stay updated with real-time notifications for new expenses or settlements. SplitPro is built with modern web technologies and can be self-hosted for full data control. The project is open-source and available on GitHub, making it easy to deploy on your own infrastructure.
About Bucket
Reflag is a TypeScript-first feature management platform that streamlines feature flagging to help developers focus on building. The service offers self-cleaning flags that automatically remove obsolete code, strong type-safety through SDKs, and deep integrations with tools like Linear, Slack, and GitHub.
Key Features of Bucket
- Self-cleaning flags: Automatically archives stale flags and removes obsolete code
- Strong type-safety: TypeScript SDKs for React, Vue, Next.js, Node.js and more
- Agent-ready: MCP integration for AI agents to manage flags via Cursor, Claude, and VS Code
- Local evaluation: Zero-latency flag evaluation for reliable performance
- Linear & Slack integration: Manage flags directly from your project management tools
- Early-access & beta management: Controlled feature rollouts with user feedback collection
- Built for SaaS: Purpose-built controls for company-level feature management
- Deep integrations: Connects with Vercel, Datadog, GitHub, and more
Tech / Self-Hosting
Reflag is a fully managed SaaS platform with no self-hosting option. The service emphasizes developer experience with comprehensive documentation, CLI tools, and SDKs for rapid integration. All data is hosted on secure cloud infrastructure with GDPR compliance.