GO Feature Flag is unclaimed —

GO Feature Flag

Open-source feature flags — built on OpenFeature.·gofeatureflag.org

GO Feature Flag is an open-source, OpenFeature-native feature flag management system that runs on infrastructure you already have, with no database to operate and no per-seat billing. It ships as a relay proxy (a Docker/Kubernetes-deployable API server for multi-language use) or as a Go module for embedded evaluation in Go-only projects. Flags are stored as YAML, JSON, or TOML files in a location of your choice (GitHub, GitLab, S3, Kubernetes ConfigMaps, databases, etc.), and it supports advanced rollout strategies, usage-data export, and change notifications.

What it's for

Rolling out features gradually with percentage-based or progressive rolloutsRunning A/B tests / experimentation on feature variationsTesting directly in production with real dataCanary releases to a subset of usersScheduled flag changes at a specific timeTargeting individual users, segments, or environmentsDecoupling deployment from releaseGiving non-engineers the ability to release featuresCollecting flag usage/evaluation data for analysis

Features 16

A/B testing / experimentation
Canary release to a user subset
Change notifications via Slack, Discord, Microsoft Teams, Webhook, or log
File-based flag configuration (YAML, JSON, TOML)
Flag usage data export (S3, GCS, Kafka, Kinesis, SQS, Pub/Sub, BigQuery, Azure Blob Storage, Webhook, OpenTelemetry, log, local file)
Go module for embedded evaluation in Go projects
Live flag config updates without redeploying
Multiple flag retrievers (GitHub, GitLab, Bitbucket, HTTP, AWS S3, Google Cloud Storage, Azure Blob Storage, Kubernetes ConfigMaps, MongoDB, Redis, PostgreSQL, local file)
No database required to operate
OpenFeature-native SDKs and providers for multiple languages
Percentage-based rollout
Progressive rollout over a time frame
Relay proxy: Docker/Kubernetes-deployable API server
Scheduled rollout / workflows
User and segment targeting rules
Web-based flag editor

At a glance

free tieropen sourceself-hostableAPI

DeploymentSelf-hosted

PlatformsWeb, Windows, macOS, Linux

Fordevelopers, engineering teams, business stakeholders

Integrations

GitHubGitLabBitbucketAWS S3Google Cloud StorageAzure Blob StorageKubernetesMongoDBRedisPostgreSQLApache KafkaAWS KinesisGoogle Cloud Pub/SubGoogle Cloud BigQueryAWS SQSSlackDiscordMicrosoft TeamsOpenTelemetryDocker

Resources

Docs

Pricing

The core product is free and open source (MIT license). An Enterprise support tier exists for direct maintainer support but its price is not publicly listed; you must contact the team or book a meeting.

OpensourceFree

Forever free, self-hosted.

Community support only

EnterpriseQuote