Flagsmith vs GO Feature Flag
Flagsmith
flagsmith.com
GO Feature Flag
gofeatureflag.orgSide by side
| Figure | Flagsmith | GO Feature Flag |
|---|---|---|
| Price from | $40/mo | Free |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | Yes | — |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 8 | 2 |
| Spec score · Feature Flag Software | 9.1 (#4) | 7.8 (#17) |
| Deployment | Flagsmith offers hosted cloud, private cloud, and self-hosted deployment options. | The relay proxy can be started locally with a Docker command and uses a flag configuration file. |
| License | The public Flagsmith repository is identified as BSD-3-Clause licensed. | The project is 100% open source under the MIT license, and the site says the license permits commercial use. |
| Product | Flagsmith manages feature flags and remote configuration for web, mobile, and server-side applications. | GO Feature Flag is an open-source feature flag management system built on OpenFeature and designed to run on infrastructure you already have. |
| Support | Start-Up includes email technical support; Scale-Up includes priority email and chat technical support; Enterprise includes real-time chat support with Slack optional. | Community support is included with the free plan; paid enterprise support includes premium support and an SLA on CVE fixes. |
Plans
Flagsmith
- FreeFree
- Start-Up$40 a month
- Start-Up (annual billing)$40 a month
- Start-Up (monthly billing)$45 a month
- Scale-Up$250 a month
- Scale-Up (annual billing)$250 a month
- Scale-Up (monthly billing)$300 a month
- EnterprisePriced on request
In their own words
Flagsmith
Flagsmith manages feature flags and remote configuration for web, mobile, and server-side applications. Teams can target releases by environment, individual user, segment, or percentage, and split users across variations for A/B and multivariate tests. Remote configuration lets teams change properties such as text, colors, and behavior without deploying new code. Deployment options include hosted cloud, private cloud, and self-hosted. Its listed integrations include Amplitude, Datadog, GitHub, GitLab, Grafana, Jira, Mixpanel, OpenFeature, Segment, Sentry, Slack, and Terraform; environment-level webhooks can send events to a team's infrastructure. The maker says core feature-flag functionality is open source and most of the product uses the BSD-3 licence. The Free plan includes 50,000 monthly requests and one team member; after exceeding the request limit, users have seven days to upgrade before action is taken. Paid plans start at $40 a month, billed 12 months paid up front. Platforms include Android, API, iOS, Linux, macOS, self-hosted, web, and Windows.
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.