The 10 top feature flag management tools in 2025
Imagine shipping a bold new feature and rolling it out minutes later without risking stability… or even pulling in engineers.
This kind of control is no longer a luxury. It’s the reality.
From testing pricing strategies in real time to launching redesigns with zero downtime, feature flags are the quiet power behind the most agile, resilient testing teams.
The right feature flag tool doesn’t just support your workflow; it transforms it.
In this guide, you'll learn everything you need to know to choose the best feature flag solution for your needs.
What are feature flags?
Feature flags are a software development technique that allow teams to turn features on or off without deploying new code.
They are controlled through configuration files, dashboards, or remote services, and act like remote switches inside your application.
With feature flags, you can:
- Test in production: deploy features to select users, like beta testers or internal teams, before a full launch.
- Gradually roll out new features: reduce risk by releasing updates to a small percentage of users before launching sitewide.
- Instantly disable problematic features: use a "kill switch" to avoid full rollbacks or urgent patches.
- Run A/B tests: deliver different feature versions to segmented audiences and measure impact.
- Target user groups: customize feature access based on location, device, subscription level, or other user attributes.
Feature flags let you innovate faster, fix issues quicker, and personalize experiences dynamically, all without compromising product stability.
New to feature flags? Check out this in-depth article explaining all about feature flags.
Why use feature flagging?
Feature flagging gives teams flexibility, safety, and strategic control across the entire software development lifecycle.
Here’s how different teams benefit:
- For experimenters: safely conduct A/B tests and canary releases
- Show different variations to different users without risk. Run experiments safely, gather real-time feedback, and make data-driven launch decisions.
- For developers and DevOps teams: maintain operational control
- Use feature flags as a real-time “kill switch” to instantly disable buggy or unstable features after deployment minimizing downtime and operational risks.
- For product managers and marketers: control feature releases strategically
- Decouple launches from deployments. Align feature releases with marketing campaigns, customer milestones, or other strategic goals without relying on engineering timelines.
- For personalization teams: deliver tailored experiences
- Serve features to specific user segments based on attributes like location, device type, or behavior, without creating multiple code branches.
- For engineering leaders: manage technical debt
- Assign ownership and systematically clean up old flags to experiment quickly, without polluting the codebase.
Having a reliable, robust feature flag management tool matters. According to the 2025 Experimentation-led Growth Report, 96% of companies expecting significant growth in 2025 invest in feature experimentation; over half of these make it a high priority.
The top 10 feature flag management tools
With so many feature flag tools available, the landscape has become crowded.
Choosing the right tool isn’t just about finding “the best” overall solution, it’s also about finding the right tool for your team’s workflow, technical needs, and experimentation goals.
This guide will help you do just that.
It includes both free, open-source options and robust, paid platforms, detailing key features, use cases, and how each tool can help your team streamline product releases to reduce risks. Here are the top 10 feature flag management tools available in 2025:
Best platforms for full experimentation and feature delivery
Kameleoon: built for all teams
Kameleoon is the only unified solution for marketing, product, and engineering teams. In a world where cross-functional velocity is the new competitive edge, Kameleoon stands apart.
Unlike siloed feature flagging tools, Kameleoon unifies feature experimentation, progressive delivery, and real-time personalization empowering marketing, product, and dev teams to collaborate from one dashboard.
Whether you’re optimizing checkout flows, testing new designs, or shipping backend improvements, Kameleoon gives you hybrid flexibility.
It also gives you statistical precision at any scale.
In fact, Kameleoon’s robust statistical modeling capabilities include support for Frequentist, Bayesian, and CUPED methodologies. These models empower teams to derive reliable, trustworthy insights from their experiments.
Additionally, the platform's AI-driven tools, including AI Copilot and AI-Driven Personalization, assist in identifying optimization opportunities and streamlining the experimentation process. With real-time data processing and over 80 integrations, plus compatibility with major data warehouses and CDPs, Kameleoon offers a scalable solution tailored to diverse organizational needs.
This unified experience is unmatched, compared to any other platform.
Key features:
- Progressive and targeted delivery for user segments
- Rollout or rollback features on any application or device using SDK libraries
- Effective technical debt management through a dashboard
- Feature experimentation capabilities to run experiments and track performance
- Plug-and-play integrations to analytics tools with integrated A/B and MVT testing
Use case: If you need to roll out a new checkout flow to a specific user segment, Kameleoon lets you monitor the conversion uplift, and instantly roll back the new feature if performance dips. But the best part is you’re able to do all these functions from a unified dashboard!
Best for: Cross-functional teams, including marketers, product managers, and developers, who need an all-in-one solution for feature flagging, personalization, and experimentation.
Pricing: Annual licensing with unlimited seats and usage; try free for 30 days and experience unified experimentation today.
Statsig - data-driven feature management
Statsig is a data-centric feature flag and experimentation platform that helps teams launch, test, and measure new features quickly and with minimal overhead. It combines feature flagging with product experimentation and analytics to give product teams and engineers powerful tools that optimize feature releases from real-time data.
Key features:
- Dynamic feature flags with custom configuration
- Real-time event tracking and analysis
- Scheduled rollouts and holdouts
- Extensive client/server-side SDKs
- Automated impact analysis for experiments
Use case: If you need to validate feature changes with data-driven insights during rollouts and experiments, Statsig’s real-time event tracking and analysis ensures each release delivers measurable business value.
Best for: Product analytics and engineering teams who prioritize experimentation and need built-in statistical analysis.
Pricing: Free for up to 2M events/month; paid plans start at $150/month.
Best platforms for basic feature toggles
ConfigCat - simple, budget-friendly, reliable
ConfigCat is a feature flag service designed for developers. It focuses on ease of use, scalability, and providing unlimited team member access at no extra cost.
Key features:
- Easy-to-use dashboard
- SDKs for all major platforms
- Targeting and segmentation based on custom attributes
- Audit logs and version tracking
- Fast global CDN with near-instant flag updates
Use case: If you’re a developer who needs to instantly roll out, test, or disable features across global apps—without waiting for a new deployment—ConfigCat gives you full control over feature releases with minimal risk.
Best for: Developers and DevOps teams, especially those at small to mid-sized companies who want a "plug-and-play" feature flagging system without paying extra per user.
Pricing: Free tier available; paid plans starting at $110/month.
Flagsmith - feature control, anywhere
Flagsmith is a versatile feature flag management tool that offers both open-source and cloud-based options.
It allows for real-time remote configuration, enabling you to update your app without waiting for app store approvals. This feature can be particularly useful if your team needs to quickly roll out features but keep the user experience consistent.
Key features:
- Feature flags and remote configuration
- User segmentation and targeting
- A/B and MVT testing
- Role-based access control
- Cloud-based, self-hosted, or open source deployment options
Use case: If you’re on a product team, you might be creating a new recommendation engine for an e-commerce site. With Flagsmith, you can A/B test the engine’s performance by rolling the new feature out to specific user segments. Should performance drop or issues arise, you can instantly switch off the feature without disrupting the entire site.
Best for: Developers and DevOps teams who need a lightweight, Git-based tool for experimentation, gradual rollouts, and quick iterations.
Pricing: Free plan for up to 50k requests per month; paid plans for higher requests.
Flipper Cloud - simple and powerful for Ruby apps
Flipper Cloud, originally developed by GitHub engineers, offers simple feature flagging with boolean and group flags. It’s great if you want a no-frills solution to control the visibility of features during a rollout.
Key features:
- Ruby (and now JavaScript) SDKS
- Boolean Flags
- Group activation
- Cost-effective
- Simple interface
Use case: If you’re on a development team, you might be creating a social media app and wanting to test a new chat feature for a select group of users. With Flipper, you can easily activate the feature, monitor its performance, and turn it off if any issues arise.
Best for: Ruby-centric engineering and development teams who need simple feature flagging with basic functionality and want something lightweight for their projects.
Pricing: Free for 2 team members; paid plans starting at $499/yr.
Best platforms for open-source customization
GrowthBook - open-source control for product experimenters
GrowthBook is an open-source feature flag management tool designed for experimentation. It combines feature flagging with advanced A/B testing capabilities, allowing your team to make data-driven decisions on feature launches.
Key features:
- Feature flagging
- A/B testing
- Advanced user targeting
- Real-time experiment analysis
- Customizable self-hosting
Use case: If your marketing team wants to A/B test new user onboarding flows, they may be pushing to see which version creates higher engagement. With GrowthBook, you can experiment with different flows while targeting specific user segments.
Best for: DevOps and engineering leads overseeing feature releases and software deployment across multiple environments.
Pricing: Free if self-hosted; paid plans for cloud.
Flipt - Git-native feature flags for modern development teams
Flipt is also an open-source feature management platform.
It's focused on Git-based flag storage, so instead of relying on a database, Flipt lets you store feature flags directly in Git. This infrastructure reduces complexity in the file management process.
Key features:
- GitOps-driven feature flag management
- Flexible evaluation methods
- Advanced targeting and segmentation
- Built-in analytics capabilities
- Enterprise-grade access control
Use case: If you’re on a small team, you may be working on a mobile app update and need a lightweight flag management tool. Flipt allows you manage feature toggles within your own Git workflow, streamlining the process without the overhead of a full-fledged feature flag platform.
Best for: Experimenters and product developers wanting to test and optimize their feature rollouts. Pricing: Completely free under the MIT license.
Unleash - built for developers
Unleash is a customizable feature flag management platform that offers advanced user targeting and gradual feature rollouts. It’s best for teams looking for flexibility and support in a wide range of programming languages.
Key features:
- Feature flagging with gradual rollout
- Advanced user segmentation
- Experimentation support
- Multi-environment support
- Technical debt management
Use case: If you’re a global SaaS platform rolling out a new pricing model, you’ll want to be able to deploy specific features to different regions or user groups. You’ll also want to ensure the change is monitored and can be adjusted, based on user feedback. Unleash lets you achieve these objectives.
Best for: Engineering teams, developers, and DevOps who need a customizable, scalable open source tool for gradual feature rollouts.
Pricing: Free 14-day trial; custom pricing afterward.
Best platforms for enterprise integrations
LaunchDarkly - the developer’s powerhouse
LaunchDarkly is a feature management platform that gives developers control over feature delivery through integrations and enterprise-grade security.
Key features:
- Feature flags with progressive delivery
- Role-based access controls (RBAC)
- 25+ SDKs for broad platform support
- Experimentation behind flags
- Real-time change auditing and monitoring
Use case: If you do feature flagging for a SaaS company, you might want to deploy new beta features to 5% of users, then monitor performance and scale to full rollout, based on engagement metrics that can be monitored in real-time. LaunchDarkly allows you to achieve this task at scale.
Best for: Engineering and DevOps teams at mid-sized to large enterprises needing scalable feature control and security.
Pricing: Paid plans starting at $10/month.
Split.io by Harness - feature flags with deep experimentation
Split is a feature delivery platform that blends feature flagging with real-time monitoring and experiment analytics, helping teams minimize risks when deploying new features.
Key features:
- Feature flagging and traffic segmentation
- Automatic rollout monitoring and alerting
- Integrated experimentation analytics
- User segmentation and targeting capabilities
- SDKs for both client and server applications
Use case: If you’re part of an engineering team, you might want to test a new notification system in production while monitoring error rates in real time. Split ensures you can immediately rollback the latest release if problems without sacrificing reliability.
Best for: Engineering leaders and teams needing to release safety nets and built-in impact measurement.
Pricing: Free limited plans available; paid tiers through trial/demo.
Feature flag wrap-up: choosing the right feature flag management tool
As the demand for feature flag management tools grows, finding a platform that fits your team’s needs is crucial for maintaining both a smooth user experience and a streamlined development process.
There are many options to choose from.
However, Kameleoon is the only platform to offer a unified solution for both feature experimentation and flag management, enabling your entire team to test, measure, and iterate faster.
Ready to release features faster and smarter?
Start your free 30-day trial of Kameleoon. Ship features, test ideas, and measure outcomes—all from one platform built for cross-functional growth. 
