35 tools · 10 open-source · 25 SaaS
The best feature flag tools. Ranked by real activity.
The top-ranked open-source feature flag tool on Enlisted is PostHog (40k GitHub stars), followed by Unleash and GrowthBook. Among SaaS products, other tools on Enlisted are most often compared with Statsig, Split and Optimizely Feature Experimentation.
Enlisted lists 35 feature flag tools: 10 open source and 25 SaaS. 9 of the open-source ones can be self-hosted on your own server or computer. The most common open-source licences here are MIT (3 tools), Apache-2.0 (2) and AGPL-3.0 (1). The open-source ones are most often listed as alternatives to Optimizely Feature Experimentation, LaunchDarkly and CloudBees Feature Management.
Last updated October 3, 2026 · ranked by GitHub stars, growth and recent commits
All 35 feature flag tools, ranked
PostHog
Analytics
PostHog automatically diagnoses problems, fixes bugs, and generates pull requests – all wi
OSSvs Mixpanel★ 40k
Unleash
Feature Flags
Open-source feature management platform
AGPL-3.0vs Split★ 14k
GrowthBook
Feature Flags
Open Source Feature Flags, Experimentation, and Product Analytics
OSSvs Statsig★ 8.5k
Flagsmith
Feature Flags
Flagsmith is an open-source feature flag platform with remote config, experimentation, and
BSD-3-Clausevs Split★ 6.6k
Flipt
Feature Flags
Enterprise-ready, Git native feature management solution
OSSvs Split★ 4.9k
Flagr
Feature Flags
Flagr is a feature flagging, A/B testing and dynamic configuration microservice
Apache-2.0vs Split★ 2.6k
GO Feature Flag
Feature Flags
GO Feature Flag is a simple, complete and lightweight self-hosted cloud native feature fla
MITvs ConfigCat★ 2.1k
FeatBit
Feature Flags
Enterprise-grade feature flag platform that you can self-host. Get started - free.
MITvs Split★ 1.9k
Featurevisor
Feature Flags
Feature flags, experiments, and remote config management with version control
MITvs Statsig★ 812
FeatureProbe
Feature Flags
FeatureProbe is an open source feature management service. 开源的高效可视化『特性』管理平台，提供特性开关、灰度发布、AB
Apache-2.0vs Split★ 1.6k
AB Tasty
Marketing & SEO
A/B testing, personalization and feature management for websites and apps
SaaS
Amplitude Experiment
Feature Flags
Experimentation and feature flag product within the Amplitude platform
SaaS
AWS AppConfig
Feature Flags
AWS service for feature flags and dynamic configuration with gradual rollouts
SaaS
Azure App Configuration
Feature Flags
Azure service for central app settings and feature flags
SaaS
CloudBees Feature Management
Feature Flags
Feature flag platform formerly known as Rollout
SaaS
Conductrics
Marketing & SEO
Experimentation and decisioning platform for A/B testing and personalization
SaaS
Confidence
Feature Flags
Experimentation and feature flag platform from Spotify
SaaS
ConfigCat
Feature Flags
Hosted feature flag service with percentage rollouts and many SDKs
SaaS
Convert Experiences
Marketing & SEO
A/B testing and personalization tool with privacy-focused tracking
SaaS
DevCycle
Feature Flags
Feature flag management service with OpenFeature-compatible SDKs
SaaS
Dynamic Yield
Marketing & SEO
Personalization and experimentation platform for web, apps and email
SaaS
Firebase Remote Config
Feature Flags
Service for changing app behavior and appearance without publishing an update
SaaS
Kameleoon
Feature Flags
Experimentation, personalization and feature flag platform
SaaS
LaunchDarkly
Feature Flags
Feature flag and release management platform with targeting and experimentation
SaaS
Omniconvert
Marketing & SEO
Conversion optimization suite with A/B testing and customer segmentation
SaaS
Optimizely
CMS
Digital experience platform with CMS, A/B testing and commerce modules
SaaS
Optimizely Feature Experimentation
Feature Flags
Feature flags with gradual rollouts and A/B tests from Optimizely
SaaS
Optimizely Web Experimentation
Marketing & SEO
Visual A/B and multivariate testing for websites
SaaS
Reflag
Feature Flags
Feature management platform for SaaS companies to track feature usage and flag rollouts
SaaSSchematic
Feature Flags
Feature flag and entitlements platform for managing plans, limits and billing-linked access
SaaS
SiteSpect
Marketing & SEO
A/B testing and personalization applied at the network layer instead of with page tags
SaaS
Split
Feature Flags
Feature flag and experimentation platform, now part of Harness
SaaS
Statsig
Feature Flags
Feature flags, experiments and product analytics in a single platform
SaaS
Tggl
Feature Flags
Feature flag service with percentage rollouts and audience targeting
SaaS
VWO
Marketing & SEO
A/B testing, heatmaps and feature flags for conversion optimization
SaaS
Feature flag tools: questions
- What is the best open-source feature flag tool?
- PostHog is the top-ranked open-source feature flag tool on Enlisted, with 40k GitHub stars. It is followed by Unleash, GrowthBook and Flagsmith.
- What are the best free feature flag tools?
- The top-ranked open-source feature flag tools with a standard licence are Unleash (AGPL-3.0), Flagsmith (BSD-3-Clause) and Flagr (Apache-2.0), so their code is free to use. 13 of the 25 SaaS products here have a free plan, including Statsig, Split and ConfigCat.
- Which feature flag tools can be self-hosted?
- 9 of the 10 open-source feature flag tools on Enlisted can be self-hosted on your own server or computer; the top-ranked are PostHog, Unleash and GrowthBook.
- How are these feature flag tools ranked?
- Open-source tools are ordered by a score built from GitHub stars, star growth over the last 30 days and how recently the code changed; 9 of the 10 had new commits or a release in the last 30 days. SaaS products have no public repository, so they get a fixed baseline score. GitHub data is refreshed daily, and nobody can pay to move up.