# JetBrains/amper

Amper - a build tool for the Kotlin and Java languages, with a focus on user experience and tooling

Repository: https://github.com/JetBrains/amper
Canonical: https://ross.abutalabs.com/products/amper
Homepage: http://amper.org/
License Family: other
Topics: build-tool, intellij, jetbrains, jvm, kotlin, kotlin-multiplatform, compose, amper, java
Archived: true
Last push: 2026-05-21T10:31:11+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 83, release rhythm 77, longevity 74
- inputs: {"age_days": 1044, "days_push": 104, "days_rel": 155, "gap_med": 27, "n_releases_24m": 10}
- flags: archived, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1748, forks 53 (observed 2026-08-28T04:05:30.890696+00:00)

## What it is
Amper is a build tool for Kotlin and Java with a focus on user experience and IDE tooling, supporting Kotlin Multiplatform and Compose. The repository has been archived and the project moved into the JetBrains Kotlin Toolchain repository.

## Use cases
- build kotlin multiplatform projects
- replace gradle with a simpler kotlin build tool
- build java projects with better ide integration
- build compose multiplatform apps
- configure jvm builds with yaml

## When to choose
- you want a simpler, tooling-first alternative to Gradle for Kotlin/Java projects
- you are already using the Kotlin Toolchain where Amper now lives
- you build Kotlin Multiplatform or Compose projects and value IDE integration

## When to avoid
- you need a build tool maintained in this original repository, which is archived
- you rely on the vast Gradle plugin ecosystem
- you need highly customized build logic beyond Amper's declarative model

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: build-tool, developer-tools
- domain: developer-tools, programming-languages, cross-platform
- platform: jvm
- tags: kotlin, java, kotlin-multiplatform, jetbrains, compose-multiplatform, archived-repository, tooling, build-tool, intellij

## Member repositories
- JetBrains/amper (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:30.890696+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 2026-08-30T08:32:28.321441+00:00, confidence not recorded.
  - readme: https://github.com/JetBrains/amper (fetched 2026-08-28T04:05:30.890696+00:00, sha b3a06e21219c)
  - homepage: http://amper.org/ (fetched 2026-08-29T11:07:09.865931+00:00, sha 3432a811b59c)
- Data as of 2026-08-30T08:39:29.467469+00:00.