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Top 23 feature-flag Open-Source Projects
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PostHog
๐ฆ PostHog provides open-source product analytics, session recording, feature flagging and A/B testing that you can self-host.
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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
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Countly
Countly is a product analytics platform that helps teams track, analyze and act-on their user actions and behaviour on mobile, web and desktop applications.
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flagsmith
Open Source Feature Flagging and Remote Config Service. Host on-prem or use our hosted version at https://flagsmith.com/
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
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FeatureProbe
FeatureProbe is an open source feature management service. ๅผๆบ็้ซๆๅฏ่งๅใ็นๆงใ็ฎก็ๅนณๅฐ๏ผๆไพ็นๆงๅผๅ ณใ็ฐๅบฆๅๅธใABๅฎ้ชๅ จๅ่ฝใ
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go-feature-flag
GO Feature Flag is a simple, complete and lightweight self-hosted feature flag solution 100% Open Source. ๐๏ธ
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Sail
Sail is a lightweight Rails engine that brings an admin panel for managing configuration settings on a live Rails app (by vinistock)
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flopflip
๐Flip or flop features in your React application in real-time backed by flag provider of your choice ๐ฆ
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featurehub
FeatureHub - cloud native feature flags, A/B testing and remote configuration service. Real-time streaming feature updates. Provided with Java, JavaScript, React, Python, Go, .Net, Ruby, Android, Swift and Flutter SDKs.
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It would be a shame not to mention PostHog as the telemetry provider we are using, since it turned out to be extremely useful. Because it is hard to find people who will talk with you about your product, gathering statistics gave us a much greater insight into our users.
Unleash (Feature Flags)
Project mention: GrowthBook: Open-source feature flagging and A/B testing platform | /r/opensource | 2023-10-20
Project mention: Which analytics tool do you use for your Android/iOS apps? | news.ycombinator.com | 2023-07-18* [Countly](https://countly.com/)
Considering all these points, the team at Flagsmith has developed a feature flag management platform Flagsmith and made it open source. The core functionality is open and you can check out the GitHub repository here. I have utilized and authored several blogs discussing their excellent offerings and strategies.
We at https://flipt.io are putting on a buy vs build webinar in a couple of weeks to discuss this very thing as it's a common question that engineering teams seem to have.
If you're interested in attending its taking place on LinkedIn on April 17: https://www.linkedin.com/events/buildvs-buy-pickingafeaturef...
Project mention: 11 Principles for building and scaling feature flag systems | news.ycombinator.com | 2023-09-22It can be done by opening a PR, I haven't tried it yet, but I'm curious to try out https://github.com/uber/piranha or maybe hear some experiences if someone has used it
Project mention: FeatureProbe: An open-source feature management for developers. | /r/github | 2023-09-23
Feature flags, also known as feature toggles, have become an essential tool for modern software development. They enable developers to control the release of new features and updates in a flexible and controlled manner. In this blog post, we'll explore what feature flags are, their classical and modern use cases, and how to implement them effectively in front-end, mobile, and server-side applications. We'll also delve into the concept of overlapping design A/B testing and how feature flags play a crucial role in building robust experimentation.
Project mention: GO Feature Flag is a simple, complete, and lightweight open source self-hosted feature flag solution alternative to Launchdarkly | /r/selfhosted | 2023-07-26
Project mention: 11 Principles for building and scaling feature flag systems | news.ycombinator.com | 2023-09-22
Less Vendor Lock-in: Open source means less vendor lock-in by nature. Many open source feature flag solutions are also partnered with OpenFeature to promote open standards, community, and less lock-in at the code level.
Project mention: Show HN: Open-source LaunchDarkly alternative with GitOps | news.ycombinator.com | 2023-10-30
Using that flow, it was quite common to encounter roadblocks: staging was often blocked, it wasnโt synced with the current state of the main branch, and we had to wait a long time before deploying to staging or production. Furthermore, we had to open and close multiple PRs to deploy a single feature due to fixes or bugs found between each of these steps, even when we leveraged our powerful feature flag solution.
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).
feature-flags related posts
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Why use Open Source Feature Flags?
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Ask HN: How did you build feature flags?
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Add Feature Flags with only a JSON flat file in NodeJS
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Pivoting a million dollar DevTool startup
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Show HN: Abby โ open-source Feature Flags for Developers
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๏ธ๐๐ Top 3 DevOps Trends to Watch Out for in 2024 ๐
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๏ธ๐๐ 3 Must Know Tools for Top DevOps Engineers ๐ท
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A note from our sponsor - SaaSHub
www.saashub.com | 4 May 2024
Index
What are some of the best open-source feature-flag projects? This list will help you:
| Project | Stars | |
|---|---|---|
| 1 | PostHog | 17,317 |
| 2 | unleash | 10,272 |
| 3 | growthbook | 5,549 |
| 4 | Countly | 5,466 |
| 5 | flagsmith | 4,316 |
| 6 | flipper | 3,569 |
| 7 | flipt | 3,324 |
| 8 | Rollout | 2,880 |
| 9 | Flagr | 2,366 |
| 10 | piranha | 2,225 |
| 11 | FeatureProbe | 1,460 |
| 12 | featbit | 1,355 |
| 13 | go-feature-flag | 1,075 |
| 14 | fun_with_flags | 1,003 |
| 15 | flags | 1,002 |
| 16 | Togglz | 922 |
| 17 | spec | 539 |
| 18 | featurevisor | 513 |
| 19 | Sail | 506 |
| 20 | flopflip | 399 |
| 21 | flagged | 386 |
| 22 | tweek | 346 |
| 23 | featurehub | 292 |
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