OSS Tanbou

Scala 2 — the official compiler, standard library, and language-spec repository

About these scores

OSS scale score is an unbounded metric that log-compresses and weights Stars, Watchers, Forks, and Contributors. Discovery score is the current OSS scale score minus the score at discovery. Update pace is commits in the last 30 days, growth momentum is the OSS scale score difference within the recent observation window, and OSS health is a 0–100 rating based on available recency, Community Health, and release data.

Stars
14,562
Primary language
Scala
License
Apache-2.0
Repository last updated
Sep 9, 2026

Overview

`scala/scala` is the official Scala 2 repository containing the compiler, standard library, reflection, REPL, Scaladoc, language specification, and the bootstrapping build used to build Scala itself.

Features and best fit

Based on official documentation; not hands-on tested · Content checked:

Maintain the compiler, standard library, and REPL in one codebase

The tree includes the compiler, library, reflection, interactive compiler, REPL, documentation tooling, and related infrastructure.

Sources: [2]

Bootstrap the compiler to validate self-hosting behavior

Development builds start from a stable reference compiler and can rebuild again using the newly produced compiler.

Sources: [2]

For Scala 2 compiler internals, library compatibility, and language implementation work

It is relevant to Scala 2 library authors, compiler contributors, language-tooling developers, and compatibility investigations.

Sources: [2]

Do not confuse Scala 2 maintenance with Scala 3 development

Scala 3 lives in another repository. Scala 2 maintenance focuses mainly on 2.13.x, with 2.12.x receiving minimal maintenance.

Sources: [2]

Official sources

  1. [1]scala/scala repository(2026-09-21)
  2. [2]Scala 2 README(2026-09-21)
  3. [3]Scala website(2026-09-21)
  4. [4]Scala 3 repository(2026-09-21)
  5. [5]Scala Apache-2.0 license(2026-09-21)
Supplemental curator note

This repository is specifically for Scala 2 rather than the newest Scala language line as a whole. The README directs Scala 3 users to `scala/scala3`, treats 2.13.x as the main maintenance branch, and describes 2.12.x as minimally maintained. New adoption should evaluate Scala 2 and Scala 3 separately.

Try it in 3 steps

  1. 1

    Get the source

    git clone --depth 1 https://github.com/scala/scala.git
  2. 2

    Enter the repository

    cd scala
  3. 3

    Check the official steps

    Continue with the commands in the README Installation, Quick Start, or Getting Started section.

    find . -maxdepth 1 -iname 'README*' -exec sed -n '1,220p' {} \; -quit
Check the official README

Growth

Growth trends · Last 30 days

14,562 Stars

Trend data is still being collected.

Development activity

Last 90 days · weekly

Commits (last 30 days)
4
Open PRs
15

Development activity is still being collected.

Built with

Categories and tags

GitHub data

GitHub dataView detailed GitHub data

GitHub Topics

  • scala
  • scala-compiler
  • scala-programming-language
  • scala-library
  • jvm-languages
  • functional-programming
  • object-oriented-programming
Stars
14,562
Forks
3,218
Watchers
748
Open issues
0
Contributors
363
Primary language
Scala
License
Apache-2.0
Repository last updated
Sep 9, 2026
Write a related article

Share a guide or use case for this OSS in Markdown. Articles are published after administrator approval.

Report incorrect information

Tell us if any listing information is incorrect or outdated.