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Top 10 Go feature-flag Projects
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Project mention: OpenFeature – a vendor-agnostic, community-driven API for feature flagging | news.ycombinator.com | 2024-10-25
Speaking as an open-source feature flag 'vendor' (https://github.com/flipt-io/flipt), the OpenFeature organization has been a joy to work with. They are very welcoming of new contributors (e.g., implementing a provider SDK in a new language).
If you're interested in this space I'd recommend lurking in their CNCF Slack Channel https://cloud-native.slack.com/archives/C0344AANLA1
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go-feature-flag
GO Feature Flag is a simple, complete and lightweight self-hosted feature flag solution 100% Open Source. 🎛️
Project mention: Go Feature Flag (100% OSS) is now supporting mobile devices with OpenFeature SDK | news.ycombinator.com | 2024-08-02To know more about GO Feature Flag, you can also go directly to the repository https://github.com/thomaspoignant/go-feature-flag
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Assuming their (also open source) Relay Proxy[1] can connect to this successfully, the disclaimers about lack of HA might not be too concerning.
We already run a giant pool of relays for our apps to connect to, both to save ingress/egress costs, and to provide a backup if LD blips out for a while.
[1] https://github.com/launchdarkly/ld-relay
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toggler
toggler is a feature flag service to decouple deployment, feature enrollment and experiments
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InfluxDB
InfluxDB high-performance time series database. Collect, organize, and act on massive volumes of high-resolution data to power real-time intelligent systems.
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Project mention: Technical Deep Dive: How We Built the Pizza CLI Using Go and Cobra | dev.to | 2024-09-23
Posthog has a first party library in Go that supports this exact functionality. First, we define a Posthog client:
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Go feature-flags discussion
Go feature-flags related posts
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OpenFeature – a vendor-agnostic, community-driven API for feature flagging
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Show HN: Feature Flags Backed by Git
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Go Feature Flag (100% OSS) is now supporting mobile devices with OpenFeature SDK
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Show HN: Dorkly: Open Source Feature Flags
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️🚀🚀 Top 3 DevOps Trends to Watch Out for in 2024 📈
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️🚀🚀 3 Must Know Tools for Top DevOps Engineers 👷
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️👨🔧 3 Tiny Fixes You Can Make To Start Contributing to Any Open Source Project 🚀
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A note from our sponsor - CodeRabbit
coderabbit.ai | 28 Apr 2025
Index
What are some of the best open-source feature-flag projects in Go? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | flipt | 4,308 |
| 2 | Flagr | 2,485 |
| 3 | go-feature-flag | 1,629 |
| 4 | ld-relay | 114 |
| 5 | cup | 75 |
| 6 | feature | 37 |
| 7 | toggler | 30 |
| 8 | posthog-go | 29 |
| 9 | growthbook-golang | 12 |
| 10 | flagsheet | 10 |
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