StackShareStackShare
Follow on
StackShare

Discover and share technology stacks from companies around the world.

Follow on

© 2025 StackShare. All rights reserved.

Product

  • Stacks
  • Tools
  • Feed

Company

  • About
  • Contact

Legal

  • Privacy Policy
  • Terms of Service
  1. Stackups
  2. DevOps
  3. Build Automation
  4. Feature Flags Management
  5. Flagr vs Petri

Flagr vs Petri

OverviewComparisonAlternatives

Overview

Flagr
Flagr
Stacks7
Followers35
Votes4
Petri
Petri
Stacks3
Followers32
Votes0

Flagr vs Petri: What are the differences?

What is Flagr? An open-source feature flagging and A/B testing tool. Open-source Go microservice supports feature flagging, A/B testing, and dynamic configuration. Logs data records and impressions.

What is Petri? A/B Test and Feature Toggles system. Open source, holistic experiment system, that covers the lifecycle of product experimenting including A/B tests and feature toggles.

Flagr and Petri belong to "Feature Flags Management" category of the tech stack.

Some of the features offered by Flagr are:

  • Makes the rollout process easy
  • Supports feature flagging, A/B testing, and dynamic configuration
  • Can run multi-variants experimentation

On the other hand, Petri provides the following key features:

  • A/B Tests
  • Feature Toggle
  • Feature Flags

Flagr and Petri are both open source tools. It seems that Flagr with 791 GitHub stars and 66 forks on GitHub has more adoption than Petri with 240 GitHub stars and 28 GitHub forks.

Share your Stack

Help developers discover the tools you use. Get visibility for your team's tech choices and contribute to the community's knowledge.

View Docs
CLI (Node.js)
or
Manual

Detailed Comparison

Flagr
Flagr
Petri
Petri

Open-source Go microservice supports feature flagging, A/B testing, and dynamic configuration. Logs data records and impressions.

Open source, holistic experiment system, that covers the lifecycle of product experimenting including A/B tests and feature toggles.

Makes the rollout process easy; Supports feature flagging, A/B testing, and dynamic configuration; Can run multi-variants experimentation; Not limited to binary on/off toggles; Can target any audience, using rich constraints to define user segmentation; Logs data records and impressions
A/B tests; Feature toggle; Feature flags; Gradual rollout
Statistics
Stacks
7
Stacks
3
Followers
35
Followers
32
Votes
4
Votes
0
Pros & Cons
Pros
  • 3
    Open Source
  • 1
    Multi-variant
No community feedback yet
Integrations
Golang
Golang
JavaScript
JavaScript
Ruby
Ruby
Python
Python
Amplitude
Amplitude
Scala
Scala
Google Analytics
Google Analytics
Java
Java

What are some alternatives to Flagr, Petri?

ConfigCat

ConfigCat

Cross-platform feature flag service for Teams. It is a hosted or on-premise service with a web app for feature management, and SDKs for all major programming languages and technologies.

Unleash Hosted

Unleash Hosted

It is a simple feature management system. It gives you great overview of all feature toggles across all your applications. You decide who is exposed to which feature.

Airship

Airship

Airship is a modern product flagging framework that gives the right people total control over what your customers see & experience - without deploying code.

LaunchDarkly

LaunchDarkly

Serving over 200 billion feature flags daily to help software teams build better software, faster. LaunchDarkly helps eliminate risk for developers and operations teams from the software development cycle.

Split

Split

Feature flags as a service for data-driven teams: Split automatically tracks changes to key metrics during every feature rollout. Split serves billions of impressions, helping organizations of all sizes to rapidly turn ideas into products.

Featureflip

Featureflip

Featureflip is a feature flag and experimentation platform that lets engineering teams decouple deployment from release. Ship code behind a flag, roll out to a percentage of users or a specific segment, and kill it instantly if something breaks. 13 SDKs (and counting), real-time updates, and a free Solo tier.

DeployRamp

DeployRamp

Automatically scans your PRs for risky changes, wraps code in feature flags with tracing, and manages rollout with anomaly detection. Ship faster with confidence.

Rollgate

Rollgate

Feature flag platform with gradual rollouts, A/B testing, user targeting, and instant rollback. 12 SDKs, sub-millisecond evaluation, free tier included. GDPR compliant.

Rollout

Rollout

Advanced feature flag solution that lets your dev teams quickly build & deploy applications without compromising on safety. A simple way to define target audiences allows devs & PMs optimize feature releases and customize user experience

Flagsmith

Flagsmith

It lets you manage features flags and remote config across web, mobile and server side applications. Use our hosted API, deploy to your own private cloud, or run on-premises.

Related Comparisons

GitHub
Bitbucket

Bitbucket vs GitHub vs GitLab

GitHub
Bitbucket

AWS CodeCommit vs Bitbucket vs GitHub

Kubernetes
Rancher

Docker Swarm vs Kubernetes vs Rancher

gulp
Grunt

Grunt vs Webpack vs gulp

Graphite
Kibana

Grafana vs Graphite vs Kibana