Flagr

Open-source feature flagging, A/B testing, and dynamic configuration microservice.

PlatformWebfreeglobal

Flagr is an open-source, self-hosted microservice for feature flags, A/B testing, and dynamic configuration. A single evaluation API lets teams decouple deploys from releases, run sticky-assignment experiments, and change runtime behavior without redeploying. Built for backend engineering teams who want flag infrastructure they run themselves.

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Behind the summary, Matchbox keeps a richer profile of Flagr - the signals our matcher actually reads to decide when to surface it. It stays private; claim the listing to see and control it.

Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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