Unleash
The open-source feature flag platform.
Overview
Unleash is an open-source feature flag service that provides a flexible and privacy-friendly way to manage features. It can be self-hosted or used via their managed cloud service, Unleash Frontend. It focuses on providing a robust and scalable feature toggle system with a variety of activation strategies.
✨ Key Features
- Open Source & Self-hostable
- Feature Toggles
- Activation Strategies (e.g., user IDs, IPs, percentage)
- Strategy Constraints
- Client SDKs for multiple languages
- Privacy-first (no PII sent to Unleash server)
🎯 Key Differentiators
- Strong commitment to open source and developer experience.
- Privacy-by-design architecture.
- Flexible and powerful activation strategies and constraints.
Unique Value: Provides a powerful, flexible, and privacy-focused open-source platform for feature management.
🎯 Use Cases (5)
✅ Best For
- Implementing feature flags without sending personally identifiable information (PII) to a third-party service.
- Self-hosting a feature flag solution for maximum control and data privacy.
- Using flexible activation strategies to target specific user segments.
💡 Check With Vendor
Verify these considerations match your specific requirements:
- Teams looking for a fully managed, all-in-one experimentation platform with advanced statistical analysis.
🏆 Alternatives
Offers a more transparent and controllable solution compared to closed-source competitors, with a strong focus on developer empowerment.
💻 Platforms
✅ Offline Mode Available
🔌 Integrations
🛟 Support Options
- ✓ Email Support
- ✓ Live Chat
- ✓ Dedicated Support (Enterprise tier)
🔒 Compliance & Security
💰 Pricing
✓ 14-day free trial
Free tier: Open-source version is free. Hosted plan has a free tier for developers.
🔄 Similar Tools in Progressive Delivery
LaunchDarkly
A feature management platform that allows teams to control their entire feature lifecycle from conce...
Harness
An end-to-end platform for intelligent software delivery, including CI, CD, feature flags, and cloud...
Split
A platform for feature flagging, experimentation, and feature data analysis to ship features that ma...
GitLab
A single application for the entire software development lifecycle, from project planning to monitor...
Optimizely
A digital experience platform offering web experimentation, personalization, and feature management....
Flagsmith
An open-source and enterprise-ready platform for managing feature flags and remote configuration acr...