Flagsmith

Self-Hosted

Open-source feature flagging and remote config platform

Overview

Flagsmith is an open-source feature flagging and remote config platform that helps teams manage feature rollouts, reduce release risk, and iterate faster. It supports multi-environment workflows (dev/staging/prod), user segmentation for targeted access, A/B testing, and real-time updates. Deploy via Docker, Kubernetes, or cloud providers (AWS/GCP) for self-hosted control, or use the managed SaaS. Integrates with Jira, Slack, and CI/CD tools. Features include kill switches, gradual rollouts, and audit logs to track changes.

Self-Hosting Resources

Find Official Image on Docker Hub View Source & Docs

Below is a reference structure for docker-compose.yml. ⚠️ Do NOT run blindly. Replace placeholders with official values.

docker-compose.template.yml TEMPLATE


version: '3'
services:
  flagsmith:
    image: <OFFICIAL_IMAGE_NAME>:latest
    container_name: flagsmith
    ports:
      - "8080:<APP_INTERNAL_PORT>"
    volumes:
      - ./data:/app/data
    restart: unless-stopped

Key Features

Feature flag rollouts & kill switches
Remote configuration management
User segmentation and A/B testing

Frequently Asked Questions

? Is Flagsmith hard to install?

No—Flagsmith offers simple self-hosting via Docker Compose, Kubernetes manifests, or cloud deployment guides. Step-by-step docs cover setup on AWS, GCP, or local servers, making it accessible for most dev teams.

? Is it a good alternative to LaunchDarkly?

Yes—Flagsmith provides core feature flagging capabilities (rollouts, kill switches) for free (self-hosted) vs LaunchDarkly's paid tiers. It’s open-source, allowing customization, whereas LaunchDarkly is proprietary.

? Is it completely free?

The self-hosted core (MIT license) is fully free. Managed SaaS plans have paid tiers for enterprise features like SSO, audit logs, and dedicated support, but self-hosted users get all basic and advanced feature flagging tools at no cost.

Top Alternatives

LaunchDarkly Search Google

Optimizely Feature Flags Search Google

Split.io Search Google

Tool Info

Pricing Free/Open Source

Category Software Development - Feature Toggle

Platform Self-Hosted

Pros

⊕ Self-hosted option for full data control
⊕ Open-source (MIT license) with no vendor lock-in
⊕ Integrates with Jira, Slack, and CI/CD pipelines

Cons

⊖ Requires server setup for self-hosted deployment
⊖ Advanced features (like SSO) need paid SaaS tiers
⊖ Learning curve for complex segmentation rules