# sockeqwe/mosby

A Model-View-Presenter / Model-View-Intent library for modern Android apps

Repository: https://github.com/sockeqwe/mosby
Canonical: https://ross.abutalabs.com/products/mosby
Homepage: http://hannesdorfmann.com/mosby/
Language: Java
License: Apache-2.0
License Family: permissive
Topics: mosby, java, android, mvp, mvi, architecture, redux
Last push: 2022-03-09T15:17:41+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4180, "days_push": 1638, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5426, forks 831 (observed 2026-08-28T04:09:17.972216+00:00)

## What it is
Mosby is a Java library providing Model-View-Presenter (MVP) and Model-View-Intent (MVI) architecture patterns for Android apps. It includes modules for ViewState support, LCE views, and presenter variants like null-object and queuing presenters.

## Use cases
- structure an android app with mvp architecture
- implement mvi unidirectional data flow on android
- manage view state and screen state restoration in android apps
- separate business logic from android ui components
- build reactive android ui with intents and state reducers

## When to choose
- you want a proven mvp or mvi architecture library for a java-based android app
- you need viewstate handling and lce (loading-content-error) views out of the box
- you prefer a lightweight library over full frameworks like jetpack compose or mvvm stacks

## When to avoid
- you are starting a new kotlin project with jetpack compose and modern mvvm/mvi tooling
- you need a library with frequent updates and active maintenance
- your team prefers coroutines and flow-based state management over rxjava-based mvi

## Facets
- artifact type: library
- maturity: maintenance
- function: state-management, ui-components
- domain: mobile-development, android-tools, web-development
- platform: jvm
- tags: mvp, mvi, android-architecture, redux, presenter, viewstate, android, mobile

## Member repositories
- sockeqwe/mosby (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:17.972216+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 2026-08-29T17:56:55.011013+00:00, confidence not recorded.
  - readme: https://github.com/sockeqwe/mosby (fetched 2026-08-28T04:09:17.972216+00:00, sha e7cd84cb3b35)
- Data as of 2026-08-30T08:39:29.467469+00:00.