shouldiuse.io

VERDICT

Should I use GO Feature Flag?

GO Feature Flag is a simple and lightweight feature flag solution, 100% Open Source. Get the full feature flag experience with OpenFeature and GO Feature Flag. - gofeatureflag.org

Worth it. Buy it if you're an engineering team comfortable self-hosting and want free feature flags without vendor lock-in. Skip it if you need a hosted UI, bundled experimentation, or vendor-backed SLAs.

Confidence

Medium. Based on 14 public sources

Ratings

  • Value for money
  • Ease of use
  • Feature depth
  • Support qualityOnly optional paid support; quality unverified
  • Security posture

Pricing

Free

Open Source

ModelNot disclosed
Monthly feesNot disclosed
HardwareNot disclosed
Free tierYes
Enterprise SupportNot published

Best for

  • Go and cloud-native engineering teams
  • OpenFeature adopters avoiding lock-in
  • Cost-conscious teams okay with self-hosting
  • DevOps-driven flag workflows

Not for

  • Non-technical teams wanting a polished hosted UI
  • Product teams needing built-in A/B testing and analytics
  • Companies requiring vendor SLAs without buying support
  • Anyone unwilling to operate self-hosted infrastructure

Gotchas - check before you buy

medium

Support beyond GitHub issues requires a paid enterprise contract; price not published

medium

Self-hosting shifts reliability and security work onto your team

low

Public security documentation appears thin in reviewed sources

low

OpenFeature eases migration out, but flag configurations still need rebuilding if you switch

Pros and cons

Pros

  • 100% open source and free to self-host
  • No database to operate; runs on infrastructure you already have
  • Built on OpenFeature, so no vendor lock-in
  • Supports in-process evaluation for low-latency flag checks
  • Roundups describe it as lightweight, simple, and complete

Cons

  • You self-host — you own uptime, upgrades, and backups
  • No managed SaaS hosting mentioned in sources
  • Enterprise support exists but pricing isn't public
  • Flagging only; experimentation and analytics need separate tools

Sources & method

Analyzed 9/19/2026 - 8 sources - No known vulnerabilities found in the sources reviewed.

official x3review x4security x1

Key stats

  • Value for money: 5/5

    Rating

  • Free

    Starting price

  • 8

    Sources

  • Analyzed

  • Value for money: 5/5. Free, open source, self-hosted
  • Ease of use: 4/5. Marketed simple and lightweight; no database
  • Feature depth: 4/5. 'Simple and complete' flags, in-process evaluation
  • Support quality. Only optional paid support; quality unverified
  • Security posture: 4/5. Runs on your infra; no known CVEs
  • Free Starting price 100% open source, self-hosted
  • Yes Free tier Optional paid enterprise support
  • No database Ops burden Runs on infrastructure you already have
  • OpenFeature Standard CNCF-backed vendor-agnostic spec

Pricing

Open Source

Free

  • Complete feature flag solution
  • Self-hosted, no database to operate

Enterprise Support

Not published

  • Optional paid support contract

Security

No known vulnerabilities found in the sources reviewed.

What users say

Roundups and the maintainer describe it as a simple, lightweight, complete open-source flag solution built on the OpenFeature standard.

“Hey r/golang! I'm the maintainer of GO Feature Flag, an open-source feature flag solution built on top of the OpenFeature standard.”
Reddit, r/golang (maintainer)
“GO Feature Flag is a lightweight and open-source solution that provides a simple and complete feature flag implementation.”
GitHub repo description
“GO Feature Flag is an open-source, feature flag management solution written in Go (obviously).”
Unleash blog roundup
Full analysis

Based on 14 public sources

Free, lightweight, OpenFeature-native flags for teams who self-host. Wrong pick if you want hosted polish or experiments.

Methodology

Based on 14 public sources

Sources

  1. GO Feature Flag — official sitegofeatureflag.org
    official
  2. GO Feature Flag GitHub repositorygithub.com
    official
  3. GO Feature Flag security pagegofeatureflag.org
    security
  4. In-process evaluation announcement — Reddit r/golangreddit.com
    review
  5. 11 Open-source feature flag tools — Unleashgetunleash.io
    review
  6. 7 Best Open Source Feature Flagging Tools in 2025 — Statsigstatsig.com
    review
  7. 8 Best Open-Source Feature Flagging Tools Compared — GrowthBookgrowthbook.io
    review
  8. OpenFeature — open standard for feature flagsopenfeature.dev
    official

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