GO Feature Flag

Open-source feature flags built on OpenFeature

About GO Feature Flag

GO Feature Flag is a lightweight, self-hosted feature flag system built on the OpenFeature standard. Teams define flags in a simple configuration file, serve them through a stateless relay proxy, and evaluate them from applications in many languages. It supports percentage rollouts, targeting rules and scheduled changes without a database or vendor lock-in, making it suited to engineering teams that want release control on their own infrastructure.

GO Feature Flag website preview

Live preview of gofeatureflag.org via the WordPress mShots service — it can take a few seconds to generate on a first visit.

GO Feature Flag: strengths & things to check

Strengths

Completely free to use — this directory lists no paid plan for it.
Covers feature flags, openfeature, self hosted, go — see the focus areas listed in its key facts.
Has 6 close alternatives in the same category on this page, so switching or comparing is easy.

Things to check

Free tools can change their model or shut down — avoid locking critical work into it without an export path.
Current plan prices are not listed here (they change too often to print reliably) — confirm the exact price on the official site.
It is one of 1164 tools in the Developer Tools category here — compare it against the alternatives below before you commit.

Derived from this listing's own data (pricing model, focus areas and category) — not a hands-on review score.

GO Feature Flag pricing

Pricing model	Free — listed in this directory as a free tool, with no paid plan required to use it.
Free access	Yes — fully free
Current plan prices	Listed on the official site — prices change, so this directory links out instead of printing a number that may already be stale.
Official site	gofeatureflag.org

GO Feature Flag key facts

Category: Developer Tools
Pricing: Free — listed in this directory as a free tool, with no paid plan required to use it.
Focus areas: feature flags, openfeature, self hosted, go
Official site: gofeatureflag.org

GO Feature Flag FAQ

How much does GO Feature Flag cost?

Free — listed in this directory as a free tool, with no paid plan required to use it. Current plans and prices are listed on the official site (gofeatureflag.org).

What is GO Feature Flag used for?

Open-source feature flags built on OpenFeature Its focus areas in the Developer Tools category: feature flags, openfeature, self hosted, go.

Where can I try GO Feature Flag?

On its official site, gofeatureflag.org — the Visit Official Site button above goes straight there.

GO Feature Flag vs alternatives

	GO Feature Flag	FeatBit	Nona	Algernon
Pricing	Free — listed in this directory as a free tool, with no paid plan required to use it.	Freemium — a free tier lets you start, and paid plans are available if you need more.	Free — listed in this directory as a free tool, with no paid plan required to use it.	Free — listed in this directory as a free tool, with no paid plan required to use it.
Focus areas	feature flags, openfeature, self hosted, go	feature flags, ab testing, self hosted, open source	feature flags, remote config, self hosted, open source	web server, go, lua
Official site	gofeatureflag.org	featbit.co	nonaconfig.com	algernon.roboticoverlords.org
Directory status	Listed	Listed	Listed	Listed

Side-by-side from each listing's own directory data. Full alternative cards are below.

About the Developer Tools category

Editors, platforms, and services developers rely on to build and ship software. The Developer Tools category on Tools Hub currently lists 1164 tools. Alongside GO Feature Flag, it includes Eclipse Che, JupyterLab, RapidForge, Tolgee.

FreeDeveloper Toolsfeature-flagsopenfeatureself-hostedgo

Alternatives to GO Feature Flag

Tools in the same Developer Tools category that share focus areas with GO Feature Flag — worth comparing before you commit:

Developer Tools

FeatBit

Feature flags for AI release control

Freemiumfeature-flagsab-testingself-hostedopen-source

Developer Tools

Nona

Open source remote config and feature flags you run yourself.

Freefeature-flagsremote-configself-hostedopen-source

Developer Tools

Algernon

Small self-contained pure-Go web server

Freeweb-servergolua

Developer Tools

Anubis

Web AI firewall that protects sites from scraper bots

Freebot-protectionsecurityself-hostedopen-source

Developer Tools

Atheos

Lightweight open-source web-based IDE that runs anywhere

Freeidecode-editorself-hostedopen-source

Developer Tools

BunkerWeb

Open-source web application firewall that protects web services

Freemiumwafsecurityopen-sourceself-hosted

More in Developer Tools

Comparing tools in the Developer Tools category? These related listings are worth a look: Eclipse Che — Run your favorite IDE on Kubernetes; JupyterLab — Web-based environment for interactive, reproducible computing; RapidForge — Self-hosted automation for scripts, webhooks, and scheduled jobs.