See reviews on G2 Crowd 
See reviews on TrustRadius 
See reviews on TrustpilotTrusted by teams of all shapes and sizes
Cross-platform feature flag service
Turn your features ON/OFF using ConfigCat's Dashboard even after your code is deployed.
ConfigCat lets you target user segments based on region, email, subscription or any other custom user attribute. We support % rollouts, A/B testing and variations.
ConfigCat is a hosted service for feature flag and configuration management. It enables you to decouple feature releases from code deployments.
We provide open source SDKs to support easy integration with your Mobile, Desktop application, Website or any Backend system.
We proudly support
Open source SDKs with getting started guides and detailed documentation.
.NET, .NET Core
Java
Android
iOS
Node.js
JavaScript
Angular
React
React Native
Nuxt.js
PHP
Laravel
Python
Go
Ruby
Deno
Elixir
Integrations
“
After looking around at many other feature flag systems, I really appreciated how simple ConfigCat was from not only a billing perspective but also how intuitive it's API is to use. We went from no feature flags to using them very heavily in our backend, and have started to integrate them with some of our front-end internal tools to facilitate quick and safe deployments.
Michael Barrett
VP of Engineering at modsy.com
“
We love ConfigCat. It's helped us streamline our feature flags and eliminate a lot of compliance overhead involved in changing flag values. The team has been super responsive to our questions and wishes and has offered better support that any other company we've dealt with. Highly Recommended!
Tim Kersten
Platform Manager at FieldAware
“
ConfigCat has helped us become more confident as a team. We now control all our critical changes using feature flags. The ability to target specific user groups has been great for targeting rollout out of new features. Going forward we plan to integrate this further into our products so we can more easily offer different tiered paid-for features.
Andrew Reeman
Software Developer at ControlPoint
“
For the feature set and the size of company we are, ConfigCat has a nice set of features for free for us to try it out and prove it in a real environment. The Professional tier is likely to be enough for us for a very long time to come. The interface is very easy to understand and use. The ConfigCat team was eager and willing to demo advanced features for us from the outset. The customer service has been exceptional. When we found a technical issue they fixed it very quickly as well.
Jared Youtsey
Senior Web Developer at medstudy.com
“
Thanks ConfigCat I'm relaxed to roll out new features. Having a web based interface to toggle feature flags is a huge advantage compared to editing config files. Updating configuration takes effect immediately in our production environment. It's a comfortable tool.
Tamás Cseh
Lead Developer at booked4.us
“
I find that the ConfigCat student plan is fantastic. When I discovered it in the list of benefits I was so amazed at how useful it is that I just had to use it. Honestly feature flags are a must-have in any kind of project and ConfigCat makes it super easy to do.
Ethan Mitchell
Student
“
After looking around at many other feature flag systems, I really appreciated how simple ConfigCat was from not only a billing perspective but also how intuitive it's API is to use. We went from no feature flags to using them very heavily in our backend, and have started to integrate them with some of our front-end internal tools to facilitate quick and safe deployments.
Michael BarrettVP of Engineering at modsy.com
“
We love ConfigCat. It's helped us streamline our feature flags and eliminate a lot of compliance overhead involved in changing flag values. The team has been super responsive to our questions and wishes and has offered better support that any other company we've dealt with. Highly Recommended!
Tim KerstenPlatform Manager at FieldAware
“
ConfigCat has helped us become more confident as a team. We now control all our critical changes using feature flags. The ability to target specific user groups has been great for targeting rollout out of new features. Going forward we plan to integrate this further into our products so we can more easily offer different tiered paid-for features.
Andrew ReemanSoftware Developer at ControlPoint
“
For the feature set and the size of company we are, it had a nice set of features for free for us to try it out and prove it in a real environment. The Professional tier is likely to be enough for us for a very long time to come. The interface is very easy to understand and use. You were eager and willing to demo advanced features for us from the outset. Your customer service has been exceptional. When we found a technical issue you fixed it very quickly as well.
Jared YoutseySenior Web Developer at medstudy.com
“
Thanks ConfigCat I'm relaxed to roll out new features. Having a web based interface to toggle feature flags is a huge advantage compared to editing config files. Updating configuration takes effect immediately in our production environment. It's a comfortable tool.
Tamás CsehLead Developer at booked4.us
“
I find that the ConfigCat student plan is fantastic. When I discovered it in the list of benefits I was so amazed at how useful it is that I just had to use it. Honestly feature flags are a must-have in any kind of project and ConfigCat makes it super easy to do.
Ethan Mitchell
Student
Pricing
Billed monthly
EUR
| Free | Pro | Smart | Enterprise | Dedicated | |
 |  |  |  |  | |
| Forever free feature flags for everyone. | Industry leading deal for startups. | Our most popular plan. | For large businesses. | Runs on Hosted or On-premise infrastructure. | |
| $ 0 / mo | $ 99 / mo | $ 299 / mo | $ 849 / mo | $ 2,999 / mo | |
Automated self-service plans | Manually assisted plans | ||||
| Highlights | |||||
| Uptime (SLA) | |||||
| Uptime (SLA) | 99 % | 99.8 % | 99.9 % | 99.9 % | 99.9 % |
| config.json downloads | |||||
| config.json downloads | 5 million / mo ~ 2 / sec | 25 million / mo ~ 10 / sec | 250 million / mo ~ 100 / sec | 1 billion / mo ~ 400 / sec | 6 billion + / mo ~ 2400 / sec |
| Need help deciding? - Here is our Plan Calculator! | |||||
| Feature Flag reads | |||||
| Feature Flag reads | unlimited | unlimited | unlimited | unlimited | unlimited |
| MAUs | |||||
| MAUs | unlimited | unlimited | unlimited | unlimited | unlimited |
| Connected instances | |||||
| Connected instances | unlimited | unlimited | unlimited | unlimited | unlimited |
| Team size | |||||
| Team size | unlimited | unlimited | unlimited | unlimited | unlimited |
| Public Management API | |||||
| Public Management API |  | | | | |
| Trees planted 🌳 | |||||
| Trees planted 🌳 | - | 1 | 10 | 15 | 20 |
| Sign Up | Buy | Buy | Buy | Contact Us | |
| Feature Flags & Remote Configuration | |||||
| Feature Flags & Settings | |||||
| Feature Flags & Settings | 10 | 100 | unlimited | unlimited | unlimited |
| Environments | |||||
| Environments | 2 | 3 | unlimited | unlimited | unlimited |
| Products | |||||
| Products | 1 | 3 | unlimited | unlimited | unlimited |
| Segmentation | |||||
| Targeting rules | |||||
| Targeting rules | 4 | 8 | unlimited | unlimited | unlimited |
| Percentage rules | |||||
| Percentage rules | 4 | 8 | unlimited | unlimited | unlimited |
| Team Management | |||||
| Team size | |||||
| Team size | unlimited | unlimited | unlimited | unlimited | unlimited |
| Permission groups | |||||
| Permission groups | 1 | 2 | unlimited | unlimited | unlimited |
| Security & Access | |||||
| 2FA | |||||
| 2FA | | | | | |
| SSO | |||||
| SSO | | | | | |
| Azure Active Directory | |||||
| Azure Active Directory | | | | | |
| Audit log retention | |||||
| Audit log retention | 7 days | 35 days | 35 days | 35 days | 35 days |
| Support | |||||
| Premium Support | |||||
| Premium Support | - | - | - | | |
| Product Demo via video conference | |||||
| Product Demo via video conference | | | | | |
| | | | | |
| Live Chat | |||||
| Live Chat | | | | | |
| Slack Community | |||||
| Slack Community | | | | | |
| Integrations & Notification | |||||
| Public Management API | |||||
| Public Management API | | | | | |
| Webhooks | |||||
| Webhooks | 1 | 3 | unlimited | unlimited | unlimited |
| Slack | |||||
| Slack | | | | | |
| Jira Cloud | |||||
| Jira Cloud | | | | | |
| Trello | |||||
| Trello | | | | | |
| DataDog | |||||
| DataDog | | | | | |
| Zapier | |||||
| Zapier | | | | | |
| GitHub Action | |||||
| GitHub Action | | | | | |
| Terraform | |||||
| Terraform | | | | | |
| Amplitude | |||||
| Amplitude | | | | | |
| CircleCI | |||||
| CircleCI | | | | | |
| Sign Up | Buy | Buy | Buy | Contact Us | |
Why us?
🛡️ Secure by design
- Feature flags are evaluated on the client side.
- Your users' data will never leave your system.
- We only store feature flag values and targeting rules.
- 256-bit SDK Key, that can be rotated.
💸 Fair pricing policy
- Forever free plan with complete feature set.
- Plans with fixed prices.
- We don't charge by the number of your users.
- We don't charge by the size of your team.
🔌 Open source SDKs
- Language specific step by step guide for easy integration.
- Fail-safe in case of no internet connection.
- Built-in in-memory cache.
- Configurable cache update interval.
- Inject your own cache implementation.
- Easily mockable in tests.
Join us on Slack🚑 Awesome support
- Chat or email directly our dev team.
- Clear documentation.
- ConfigCat Community Slack.
- Feature requests are welcome.
❤️ Made for humans
- 10 minutes trainable user interface.
- Easy to use even for non-technical people.
Use Cases
Separate marketing releases from code deployments
This way you can deploy code anytime the development is done or even incomplete. And turn on the feature later when you are ready.
Soft launch, just like the cool kids
What if you could release to 1%, 5% or 10% percent of your user base before big bang to see how they react or how the infrastructure is going to hold on? Soft launch, canary release or phased rollout are not buzzwords for the privileged big players anymore.
Rapid disaster recovery
What could possibly go wrong? Right? By implementing feature flags or feature toggles in your application, you are adding emergency kill switches in the same time.
User targeting
Targeting segments of users based on region, email or any attribute lets you gain full control over who sees what at any given time.
A/B testing theories on real users
Let's test the Design Team's and the Marketing Team's new idea on two group of users of the same size against each other to see which converts better. This could be done in production environment with real users.
Eating your own cat dog food
Dogfooding is when an organization uses its own product to test real-world usage. This helps you maintain your reputation and demonstrates high confidence in your own product.