ConfigCat is a hosted feature flag and configuration management service for teams that need to control features after code deployment. It supports user targeting, percentage rollouts, A/B testing, and variations, with targeting rules, user segments, audit logs, and approval workflows. Open-source SDKs cover mobile, desktop, web, and backend apps; listed languages include JavaScript, .NET, Android Java, iOS Swift, Python, Go, and Rust. Integrations include GitHub, GitLab, Jira, Slack, Terraform, and Datadog. ConfigCat says flags are evaluated client-side and customer user data stays in the customer's system, while it stores flag values and targeting rules. SDK keys are 256-bit and rotatable. The company states that it is ISO/IEC 27001:2022 certified and offers EU-only data governance. Plans include unlimited seats, service connections, monthly active users, contexts, and feature flag reads, but set limits for config JSON downloads and network traffic. A CLI scans code for flag usage and reports likely unused flags. The Forever Free plan is 0.00 USD per free; paid plans start at 110.00 USD per month.
Who it is for
ConfigCat suits teams that need to change feature availability after deployment using targeting, staged rollouts, or experiments. Its SDK range covers teams working across mobile, web, desktop, and backend applications.
What is good
- Supports targeting, percentage rollouts, and A/B testing
- Open-source SDKs cover many platforms and languages
- Plans include unlimited seats and feature flag reads
- CLI reports likely unused flags
What to know first
- Plans limit config JSON downloads and network traffic
- Pro costs 110.00 USD per month
- Dedicated costs 4500.00 USD per month
Verdict
ConfigCat offers feature management controls across a wide SDK range, with a free plan and several paid tiers. Check plan-specific download and traffic limits alongside the features and support level you need.
ConfigCat plans and pricing
All plansCompared on release management software
- Free plan
- Yes
- SDK languages
- JavaScript, Angular, React, Node.js, Deno, Bun, Cloudflare Worker, .NET, Java, Go, PHP, Python, Android Java, iOS Swift, Dart, Flutter, Kotlin Multiplatform, Ruby, Elixir, C++, Rust, Unreal Engine
- Targeting rules
- Yes
- Percentage rollouts
- Yes
- User segments
- Yes
- Environments
- 3
- Audit log
- Yes
- Approval workflows
- Yes
