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Flagr

openflagr/flagr
One-command deploy You need your own server, but the README has a copy-paste Docker command that gets it running.

Flagr is a feature flagging, A/B testing and dynamic configuration microservice

A/B testing
Flagr website screenshot

Deploy command

docker pull ghcr.io/openflagr/flagr
docker run -it -p 18000:18000 ghcr.io/openflagr/flagr

open http://localhost:18000

Taken from the project README. You need a server with Docker; you may still need to add environment variables.

From the README

Flagr is an open-source Go service for feature flags, A/B tests, and dynamic configuration. One primitive, the flag, backs all three: your code calls POST /api/v1/evaluation, Flagr looks at who is asking (entityID, entityContext), and returns a variant plus optional JSON attachment.

Stars
★ 2.6k
Language
Go
License
Apache-2.0
Last updated
2026-09-21
Category
A/B testing & flags
Section
🌏 Going global