# maccman/abba

A/B testing framework

Repository: https://github.com/maccman/abba
Canonical: https://ross.abutalabs.com/products/abba
Language: Ruby
License: MIT
License Family: permissive
Last push: 2020-08-12T06:03:39+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4969, "days_push": 2212, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1351, forks 71 (observed 2026-08-28T04:04:28.176765+00:00)

## What it is
Abba is a self-hosted A/B testing framework written in Ruby that helps improve site conversion rates. It provides a simple JavaScript API for running multi-variant experiments and viewing results filtered by date and browser.

## Use cases
- run a/b tests on my website
- test which button color converts better
- self-hosted split testing tool
- compare conversion rates between page variants
- run experiments with multiple variants and weighting
- track test conversions on a receipt page

## When to choose
- you want a simple, self-hosted A/B testing tool you fully control
- you deploy on Heroku or already run Ruby and MongoDB
- you need a lightweight JavaScript snippet API for client-side experiments

## When to avoid
- you need a maintained solution - the project has not seen releases since 2020 and requires old Ruby 1.9.3
- you need server-side or feature-flag-style experimentation at scale
- you prefer a SaaS A/B testing platform with dashboards and statistical analysis built in

## Facets
- artifact type: application
- maturity: maintenance
- function: analytics, web-framework, http-server
- domain: web-development, analytics, self-hosted
- platform: ruby, self-hosted
- tags: ab-testing, conversion-optimization, experimentation, mongodb, heroku, web-server

## Member repositories
- maccman/abba (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:28.176765+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:42:13.402576+00:00, confidence not recorded.
  - readme: https://github.com/maccman/abba (fetched 2026-08-28T04:04:28.176765+00:00, sha 7ee34a94cb1d)
- Data as of 2026-08-30T08:39:29.467469+00:00.