# Rollgate

> Feature flag management platform for developers. EU-hosted (data residency in Germany, GDPR-friendly), privacy-first, with sub-millisecond flag evaluation, real-time updates over Server-Sent Events, and 12 official SDKs.

Rollgate lets teams ship features behind flags with gradual rollouts, A/B testing, user targeting, scheduled changes, kill switches, and instant rollback. Built and maintained by Domenico Giordano (founder & engineer). Free tier: 500,000 requests/month, unlimited flags. Self-hosting is available via Docker Compose. SSO via OIDC and SAML.

## Documentation
- [Documentation](https://rollgate.io/docs): Overview of Rollgate concepts and setup.
- [Quickstart](https://rollgate.io/docs/quickstart): Create a flag and evaluate it from an SDK in minutes.
- [Core concepts](https://rollgate.io/docs/concepts): Flags, environments, projects, targeting.
- [Architecture](https://rollgate.io/docs/architecture): How real-time evaluation works (SSE, edge, sub-millisecond).
- [Segments](https://rollgate.io/docs/segments): Reusable targeting rules for user cohorts.
- [Self-hosted](https://rollgate.io/docs/self-hosted): Run Rollgate on your own infrastructure with Docker Compose.
- [SSO](https://rollgate.io/docs/sso): Single sign-on via OIDC and SAML.
- [Webhooks](https://rollgate.io/docs/webhooks): Subscribe to flag and environment changes.
- [REST API](https://rollgate.io/docs/api): Manage flags, environments, and evaluation over HTTP.
- [API authentication](https://rollgate.io/docs/api/auth): API keys and scopes.
- [API errors](https://rollgate.io/docs/api/errors): RFC 7807 problem+json error format.

## SDKs
- [React SDK](https://rollgate.io/docs/sdk/react): Feature flag SDK for React.
- [Vue SDK](https://rollgate.io/docs/sdk/vue): Feature flag SDK for Vue.
- [Angular SDK](https://rollgate.io/docs/sdk/angular): Feature flag SDK for Angular.
- [Svelte SDK](https://rollgate.io/docs/sdk/svelte): Feature flag SDK for Svelte.
- [Browser (JS) SDK](https://rollgate.io/docs/sdk/browser): Feature flag SDK for Browser (JS).
- [Node.js SDK](https://rollgate.io/docs/sdk/node): Feature flag SDK for Node.js.
- [Go SDK](https://rollgate.io/docs/sdk/go): Feature flag SDK for Go.
- [Python SDK](https://rollgate.io/docs/sdk/python): Feature flag SDK for Python.
- [Java SDK](https://rollgate.io/docs/sdk/java): Feature flag SDK for Java.
- [.NET SDK](https://rollgate.io/docs/sdk/dotnet): Feature flag SDK for .NET.
- [Flutter SDK](https://rollgate.io/docs/sdk/flutter): Feature flag SDK for Flutter.
- [React Native SDK](https://rollgate.io/docs/sdk/react-native): Feature flag SDK for React Native.

## Comparisons and migrations
- [Flagsmith Alternative: Why Teams Switch to Rollgate](https://rollgate.io/blog/flagsmith-alternative): Looking for a Flagsmith alternative? Compare Rollgate vs Flagsmith on free tier limits, real-time updates, self-hosting trade-offs, and pricing.
- [Migrate from Unleash to Rollgate: Drop the Ops Bill](https://rollgate.io/blog/migrate-from-unleash): Thinking of migrating from self-hosted Unleash? Here is the real ops cost of running it, what changes in your SDK code, and how Rollgate maps every concept.
- [Statsig Alternative 2026: Why Teams Switch to Rollgate](https://rollgate.io/blog/statsig-alternative): Looking for a Statsig alternative? Compare pricing, EU data residency, project limits, and feature flag focus. Honest 2026 comparison with Rollgate.
- [ConfigCat Alternative: Why Developers Are Switching to Rollgate](https://rollgate.io/blog/configcat-alternative): Looking for a ConfigCat alternative? Compare Rollgate vs ConfigCat on scheduled releases, 1-click rollback, real-time SSE, SDK resilience, and pricing.
- [Best LaunchDarkly Alternatives in 2026: 5 Tools Compared](https://rollgate.io/blog/launchdarkly-alternative): Looking for the best LaunchDarkly alternatives in 2026? Compare Rollgate, Flagsmith, ConfigCat, and GrowthBook on pricing, SDKs, and EU data residency.

## Guides and articles
- [Feature Flags in .NET 8: ASP.NET Core, Minimal APIs, Blazor](https://rollgate.io/blog/feature-flags-aspnet-core): Add feature flags to .NET 8 applications. Complete guide for ASP.NET Core, Minimal APIs, and Blazor with gradual rollouts and user targeting examples.
- [Feature Flags in Node.js: Express and Fastify Guide](https://rollgate.io/blog/feature-flags-nodejs): Implement feature flags in Node.js with Express and Fastify. Middleware patterns, gradual rollouts, user targeting, and kill switches with runnable code.
- [Cloudflare Flagship: Feature Flags at the Edge, Explained](https://rollgate.io/blog/cloudflare-flagship-edge-feature-flags): Cloudflare Flagship brings native feature flags to the edge. What it means for teams choosing a feature flag platform in 2026, and where it falls short.
- [How We Test a Feature Flag Platform: 1,192 Tests Across 12 SDKs](https://rollgate.io/blog/how-we-test-rollgate): How we test a feature flag platform with 1,192 tests across 12 SDKs: unit tests, contract tests for cross-SDK consistency, and stress testing 28K SSE connections.
- [Feature Flag Platform Comparison 2026: An Honest Self-Audit](https://rollgate.io/blog/rollgate-product-audit-2026): We scored our own feature flag platform against LaunchDarkly, Flagsmith, ConfigCat, and GrowthBook. Here's where Rollgate excels, where it falls short, and what we're building next.
- [Feature Flags Pricing Comparison 2026: Stop Paying Per Seat](https://rollgate.io/blog/feature-flags-pricing-comparison): Feature flags pricing for a 10-dev team: LaunchDarkly can hit $96K+/year. See what Flagsmith, ConfigCat, GrowthBook, and Rollgate cost instead.
- [Feature Flags in Go: A Practical Guide with Examples](https://rollgate.io/blog/feature-flags-golang): Implement feature flags in Go applications. From simple boolean checks to gradual rollouts, targeting, and A/B testing with the Rollgate Go SDK.
- [Feature Flags in Next.js: Step-by-Step Guide (App Router)](https://rollgate.io/blog/feature-flags-nextjs): Add feature flags to your Next.js app in minutes. Toggle features, run A/B tests, and do gradual rollouts with Rollgate. No redeploy needed. Free to start.
- [Feature Flags in Python: Django, FastAPI & Flask Guide](https://rollgate.io/blog/feature-flags-python): Add feature flags to Python applications. Complete guide for Django, FastAPI, and Flask with gradual rollouts, user targeting, and A/B testing examples.
- [How to Add Feature Flags to React in 5 Minutes](https://rollgate.io/blog/feature-flags-react): Step-by-step guide to implementing feature flags in React. Learn useFlag hooks, gradual rollouts, A/B testing, and conditional rendering with real code examples.
- [Scheduled Feature Releases: Ship at 3am Without Staying Awake](https://rollgate.io/blog/feature-flags-scheduled-releases): Feature flags scheduled releases let you automate launches, skip 3am deploys, and roll back instantly. Learn the workflow with real code examples.
- [A/B Testing with Feature Flags: Ship Experiments Without the Complexity](https://rollgate.io/blog/ab-testing-feature-flags): Learn how to run A/B tests using feature flags instead of dedicated experimentation platforms. Practical guide with code examples, statistical basics, and common pitfalls.
- [How I Built Rollgate: From Side Project to Feature Flags SaaS](https://rollgate.io/blog/how-i-built-rollgate): The technical journey behind Rollgate, a feature flags SaaS built with Go, Next.js and PostgreSQL as a LaunchDarkly alternative. Architecture, decisions, and real numbers.
- [What Are Feature Flags? A Complete Guide for 2026](https://rollgate.io/blog/what-are-feature-flags): What is a feature flag? A remote switch that enables features without redeploying code. How feature flags work: types, use cases, best practices.
- [Feature Flags vs Feature Branches: When to Use Each](https://rollgate.io/blog/feature-flags-vs-feature-branches): Feature flags and feature branches solve different problems. Learn when to use each, how they complement each other, and why modern teams use both.
- [How to Implement Gradual Rollouts Without Breaking Production](https://rollgate.io/blog/gradual-rollouts-guide): A practical guide to gradual rollouts using feature flags. Learn percentage-based rollouts, canary releases, and ring deployments with real examples.

## Key pages
- [Pricing](https://rollgate.io/pricing): Plans and quotas (Free, Starter, Pro, Growth) in EUR.
- [About](https://rollgate.io/about): Who builds Rollgate and why.
- [API spec (OpenAPI)](https://rollgate.io/api/openapi.yaml): Machine-readable REST API specification.