Feature flags for Ruby apps and their client-side code. Roll out new features gradually. Provide early access to key customers. Test drive features internally.
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FlipperCloud.io's answer:
Top Ruby gem for feature flagging for a decade. Small team that really cares. You can store your flags locally in your infrastructure so they stay blazing fast.
Toggly - Build Better Software Faster Using Feature Flags
ConfigCat - ConfigCat is a developer-centric feature flag service with unlimited team size, awesome support, and a reasonable price tag.
Go Feature Flag - Description will go into a meta tag in <head />
Rollout - Fix or prevent critical bugs while your app is live.
Flaghub - Seamlessly control feature flags with ease.
LaunchDarkly - LaunchDarkly is a powerful development tool which allows software developers to roll out updates and new features.