GO Feature Flag vs GrowthBook
GO Feature Flag
gofeatureflag.org
GrowthBook
growthbook.ioSide by side
| Figure | GO Feature Flag | GrowthBook |
|---|---|---|
| Price from | Free | $40/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | Yes |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 2 | 9 |
| Spec score · Feature Flag Software | 7.8 (#17) | 9.0 (#5) |
| Audience | The maker describes the product as a feature management solution for teams seeking self-hosting, OpenFeature compatibility, and feature releases decoupled from deployments. | The pricing page describes Starter as for individuals or small teams, Pro for small and mid-sized teams, and Enterprise for teams operating at scale. |
| Deployment | The relay proxy can be started locally with a Docker command and uses a flag configuration file. | GrowthBook is available as a managed cloud service or self-hosted, including air-gapped deployment on major clouds or on-premises. |
| License | The project is 100% open source under the MIT license, and the site says the license permits commercial use. | GrowthBook uses an open-core model: most code is MIT licensed while some directories use the commercial GrowthBook Enterprise License. |
| Product | GO Feature Flag is an open-source feature flag management system built on OpenFeature and designed to run on infrastructure you already have. | GrowthBook is a warehouse-native platform for experimentation, feature flags, and product analytics. |
| SDKs | The site lists client and server SDKs for 16 languages and frameworks, including JavaScript, React, Swift, Kotlin, Go, Java, Python, .NET, Ruby, and Rust. | The SDK catalog covers JavaScript, React, Vue, Swift, Kotlin, Flutter, React Native, Node.js, Python, Ruby, PHP, Java, Go, C# and Elixir. |
| Support | Community support is included with the free plan; paid enterprise support includes premium support and an SLA on CVE fixes. | Community Slack support is available on every plan; Pro and Enterprise add in-app chat and premium email, while Enterprise adds shared Slack, onboarding and training. |
Plans
GrowthBook
- Open SourceFree
- Open Source (Self-Hosted)Free
- StarterFree
- Starter (Cloud)Free
- Pro$40 a month
- Pro (Cloud)$40 a month
- EnterprisePriced on request
- Enterprise (Cloud)Priced on request
- Enterprise (Self-Hosted)Priced on request
In their own words
GO Feature Flag
GO Feature Flag is an open-source feature-flag management system built on OpenFeature for infrastructure you control. Its relay proxy runs locally with Docker and a flag configuration file. Teams can target users and segments, use percentage or progressive rollouts, schedule changes, and run A/B tests. Client and server SDKs are listed for 16 languages and frameworks, including JavaScript, TypeScript, React, Swift, Kotlin, Go, Java, Python,.NET, Ruby, Rust, and others. Retrievers load configuration from HTTP(S), local files, Kubernetes ConfigMaps, cloud storage, Git providers, MongoDB, Redis, and PostgreSQL. Exporters send evaluation data to Kafka, AWS S3, BigQuery, OpenTelemetry, webhooks, or logs. Notifications can reach Slack, Discord, Microsoft Teams, webhooks, or logs. The MIT-licensed Opensource plan costs nothing, billed forever, with all features, unlimited flags, and community support.
GrowthBook
GrowthBook has no write-up on Specifiction yet; its figures are above.