Compare 8 free feature flags tools, free tiers, and developer deals. We could not confirm today's terms for 2 of them: on 1 the page we cite did not answer, and on 1 our own read did not confirm them. Each row says why. Nothing on record contradicts our terms for LaunchDarkly and more.
What this name holds: Flag and experiment services that switch behaviour without a deploy.
We track 8 feature flags services with a free tier we hold as current and 1 without. This category has been relatively stable — only 2 pricing changes recorded across all vendors.
| Vendor | Tier | Description | Read / catalogue date |
|---|---|---|---|
| LaunchDarkly | Developer | Feature management — $0 / mo, forever. Unlimited seats. A/B Tests and Experiments includes 100K experimentation MAU per month. 10M logs and 10M traces /mo. 5K session replays and 5K errors /mo. 5K AI runs/mo included. 1K client-side MAU /mo. | 2026-10-30 / 2026-07-23 |
| Flagsmith | Free | Feature flags and remote config — 50K API requests/month, unlimited flags/environments/identities, A/B testing, 1 userWhen we last read the page we cite for this offer, on 2026-11-08, we found a change we could not reconcile with the terms we publish, so we cannot confirm these terms today. | 2026-11-08 / 2026-10-18 |
| Harness Feature Flags | Free | Feature flags (formerly Split.io) — 2 developers, 25K client MAU, unlimited flags and environments, CI/CD pipelines for rollout | 2026-11-09 / 2026-07-24 |
| GrowthBook | Starter / Open Source | GrowthBook Cloud Starter is free for up to 3 users and 1 project. Self-hosted Open Source is free with unlimited users and 1 project. Both have unlimited feature flags, experiments and traffic. Bring your own warehouse. No credit card required. | 2026-11-08 |
| Statsig | Free | 2M+ metered events/month free, unlimited feature flags at all tiers. Includes 50K session replays. Experimentation and analytics built in | 2026-11-08 |
| Abby | Free | Open-Source feature flags & A/B testing. Configuration as Code & Fully Typed Typescript SDKs. Strong integration with Frameworks such as Next.js & React. Free plan: 1,000 events/month, 3 feature flags/remote configs, 1 A/B test, 5 environments.We could not read the page we cite for this offer when we last looked, on 2026-11-11, so we cannot confirm these terms today. | 2026-10-21 / 2026-07-04 · tried 2026-11-11, no read |
| ConfigCat | Free | ConfigCat is a developer-centric feature flag service with unlimited team members (within 1 permission group). Forever Free plan: 10 feature flags, 2 environments, 2 products, 5M config JSON requests/mo, 20 GB network traffic/mo, 2 segments, 4 targeting rules/flag, 1 webhook, 7-day audit log retention. | 2026-11-10 |
| Hypertune | Free | Free: $0 / month, 1m CDN requests, 1m analytics events, Up to 3 team members, Unlimited CDN bandwidth and service connections, Unlimited MAUs / MTUs, Unlimited environments and projects, Unlimited feature flags and experiments. The service will shut down on 10th August 2026. | 2026-10-29 / 2026-07-05 |
| Toggled.dev | Free | Enterprise-ready, scalable multi-regional feature toggles management platform — FREE plan includes: Single project, Unlimited Clients, Up to 10 feature toggles per project, Up to 2 environments per project, 2 seats included, Data residency, Users segmentation, Session stickiness, Realtime notifications, Unlimited MAU, Role Based Access Control, Embedded analytics, Release Calendar (beta), Compatible with many client SDKs, Integrations with Slack & MS Teams, generic webhook and admin API, Amazing activation strategies!, Google & GitHub SSO, 2F authentication, Helpdesk | 2026-11-11 |