Flagsmith is an open-source feature flag platform with remote config, experimentation, and self-hosted or cloud deployment options.

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• Updated Nov 12, 2026
• Python

Feature Flag Management and A/B Testing platform

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• Updated Nov 12, 2026
• Go

An Android library for generating simple A/B tests

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• Updated Dec 21, 2017
• Java

Fast Bayesian A/B and Multivariate testing.

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• Updated Dec 27, 2022
• Python

Contextual Multi-Armed Bandit Platform for Scoring, Ranking & Decisions

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• Updated Jun 9, 2023
• Python

Easily Score & Rank Codable Objects with ML

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• Updated Jul 10, 2023
• Swift

(Multi Variate Testing) Interpreter for Planout code written in Golang

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• Updated Jul 26, 2022
• Go

📈 basic tool to assess the statistical significance of multivariate tests

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• Updated Nov 26, 2017
• Jupyter Notebook

Fast Mutual Information Based Independence Test

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• Updated Dec 31, 2019
• C++

Variate plugin for Nuxt.js

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• Updated Dec 4, 2022
• JavaScript

A Microservice for incorporating A/B/n testing or Split testing or Multivariate testing (MVT) into any application.

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• Updated Nov 16, 2021
• JavaScript

Easily Score & Rank JSON-Encodable Objects with ML

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• Updated May 21, 2024
• Java

Functions for Bayesian A/B and Multivariate testing

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• Updated Oct 23, 2022
• Jupyter Notebook

AB Optimizely notes. [Created February 28, 2017 ]

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• Updated Feb 28, 2017

A/B and multivariate experiments for Laravel Pennant: weighted variants, sticky assignment, exposure and conversion tracking, z-test and Bayesian results, winner rollout. Unofficial community package.

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• Updated Oct 24, 2026
• PHP

JS / Node Library for Tweeker embed code

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• Updated Mar 26, 2022
• JavaScript

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• Updated Apr 5, 2019

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• Updated Jul 1, 2025
• Jupyter Notebook

Testing 1...2...3. Open source feature flag management platform for .NET

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• Updated Jul 6, 2026
• C#

React Component Wrapper for the tweeker.io embed script

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• Updated Jan 5, 2023
• JavaScript