Feature Flags / Remote Config Tools

AB Tasty — A/B testing and experimentation platform with feature flags, personalization, and funnel analysis.

Abby — CI/CD for Applications tool for developers. Specializes in Feature Flags.

Argo Rollouts — CI/CD for Applications tool for developers. Specializes in Progressive Delivery.

Bucket — Feature Flags / Remote Config tool for developers. Specializes in Feature Management.

Bucket.co — CI/CD for Applications tool for developers. Specializes in Feature Flags.

Open-source feature flag management and A/B testing platform created by CyberAgent, supporting 100M+ users with billions of flag evaluations per month.

CloudBees — Enterprise DevOps and feature management platform with CI/CD, compliance, and flag controls.

Convert — A/B testing and personalization platform with no-cookie tracking and privacy-first architecture.

DevCycle — Feature Flags / Remote Config tool for developers. Specializes in feature management.

Feature flipper for Django with flags, switches and samples. Stores settings in database, controls via Django admin, supports user/group/percentage targeting.

Eppo — Experimentation and feature flag platform built for data-warehouse-first statistical analysis.

FeatBit — Feature Flags / Remote Config tool for developers. Specializes in feature management.

FeatureHub — CI/CD for Applications tool for developers. Specializes in Feature Flags.

FeatureProbe — CI/CD for Applications tool for developers. Specializes in Feature Flags.

Featurevisor — Git-based feature flag system for managing flags as code with CI/CD integration.

Open-source Java feature toggle library with string-based flag names, 20+ database backends, audit trail and Spring Boot starter with web console and REST API.

Feature flag daemon with a Unix philosophy. Reference OpenFeature-compliant backend supporting HTTP/gRPC evaluation, targeting rules and OpenTelemetry tracing.

Flagger — CI/CD for Applications tool for developers. Specializes in Progressive Delivery.

Flagr — Feature Flags / Remote Config tool for developers. Specializes in Feature Flags.

Free open-source Vercel library for Next.js and SvelteKit feature flags. Framework-native, provider-agnostic with adapters for LaunchDarkly, Statsig, Optimizely, Hypertune, ConfigCat, DevCycle and Flipt.

Flagship.io — Feature flag and A/B testing platform with targeting rules, rollout strategies, and multi-language SDKs.

Simple, complete and lightweight self-hosted feature flag solution, 100% open source. OpenFeature-native with 15+ language SDKs via relay proxy.

GrowthBook — Open-source feature flags and A/B testing platform connected to your existing data warehouse.

HappyKit — CI/CD for Applications tool for developers. Specializes in Feature Flags.

Hyperon — feature flag and configuration management platform with secrets support for cloud apps.

Hypertune — Feature Flags / Remote Config tool for developers. Specializes in Type-Safe Feature Flags.

Jsonnet — Feature Flags / Remote Config tool for developers. Specializes in Data Templating Language.

Kameleoon — A/B testing and feature flagging platform with server-side and client-side SDKs and AI targeting.

Kustomize — Feature Flags / Remote Config tool for developers. Specializes in Kubernetes Configuration.

Dynamic configuration platform that turns functions in your codebase into remotely tunable values. Positioned as going beyond feature flags with FAANG-style config as code.

Molasses — Feature Flags / Remote Config tool for developers. Specializes in Feature Flags.

Optimizely — Experimentation and feature management platform with web, full-stack, and content testing.

Prefab — Feature Flags / Remote Config tool for developers. Specializes in feature management.

TypeScript-first feature flag platform with self-cleaning flags. Agent automatically archives stale flags and generates GitHub PRs to remove obsolete code.

Schematic — Feature Flags / Remote Config tool for developers. Specializes in feature management.

Statsig — Feature Flags / Remote Config tool for developers. Specializes in Feature Flags.

Taplytics — Mobile A/B testing and push notification platform for iOS and Android with visual editor.

Toggled — Lightweight feature flag service with a simple REST API and React SDK for boolean toggles.

Open-source Java feature toggle library implementing the Feature Toggles pattern, using Java enums for type-safe flag definitions. Apache 2.0 licensed.