# coursier/coursier

Pure Scala Artifact Fetching

Repository: https://github.com/coursier/coursier
Canonical: https://ross.abutalabs.com/products/coursier
Homepage: https://get-coursier.io
Language: Scala
License: Apache-2.0
License Family: permissive
Topics: scala, sbt-plugin, launcher, scalajs, scala-native
Last push: 2026-08-22T12:07:04+00:00

## Health v2 (maintenance only)
Score: 98/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 96, longevity 100
- inputs: {"age_days": 4096, "days_push": 11, "days_rel": 30, "gap_med": 7.5, "n_releases_24m": 15}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2135, forks 334 (observed 2026-08-28T04:06:17.538880+00:00)

## What it is
Coursier is a dependency resolver and artifact fetcher for Maven/Ivy repositories, written in pure Scala, serving as the Scala application and artifact manager. It provides a CLI (cs) to install Scala tooling and applications, plus an embeddable Scala library API for resolving and fetching dependencies.

## Use cases
- install the Scala development environment with one command
- resolve and download Maven/Ivy dependencies fast and in parallel
- create standalone launchers for Scala applications
- install Scala CLI tools like scalafmt or sbt from the command line
- embed dependency resolution in my own Scala tool via an API
- fetch artifacts from Maven repositories in a Scala.js project
- replace Ivy-based dependency fetching in sbt builds

## When to choose
- you work in the Scala/JVM ecosystem and need fast, parallel dependency resolution
- you want a one-command setup of the Scala toolchain including JVM, scala-cli, and sbt
- you need to programmatically resolve Maven/Ivy dependencies from Scala code
- you want to install and launch Scala applications from the command line

## When to avoid
- your project is not JVM/Scala-based and uses npm, pip, or cargo for dependencies
- you need to publish artifacts rather than resolve and fetch them
- you require a stable binary API for the library, which is still subject to breakages

## Facets
- artifact type: cli-tool
- maturity: active
- function: package-manager, cli, developer-tools, http-client
- domain: developer-tools, programming-languages
- platform: windows, jvm, cli, cross-platform
- tags: scala, dependency-resolution, maven, ivy, artifact-fetching, sbt-plugin, launcher, jvm-installer, command-line, automation, linux, macos

## Member repositories
- coursier/coursier (main) score 98

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:17.538880+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 2026-08-30T02:51:54.206207+00:00, confidence not recorded.
  - readme: https://github.com/coursier/coursier (fetched 2026-08-28T04:06:17.538880+00:00, sha ee05f17ffb5b)
  - homepage: https://get-coursier.io (fetched 2026-08-29T10:31:57.915603+00:00, sha 342d577da909)
  - site_page: https://get-coursier.io/docs/overview (fetched 2026-08-29T10:31:57.924826+00:00, sha 9ac8503a1aaa)
  - site_page: https://get-coursier.io/docs/cli-installation (fetched 2026-08-29T10:31:57.927167+00:00, sha f4f18a5c4fea)
  - site_page: https://get-coursier.io/docs/sbt-coursier (fetched 2026-08-29T10:31:57.929647+00:00, sha 762266fcad2b)
  - site_page: https://get-coursier.io/docs/api (fetched 2026-08-29T10:31:57.931763+00:00, sha 467825f10ff3)
- Data as of 2026-08-30T08:39:29.467469+00:00.