Training Example: Scala – Review the Data, Give Your Score & Compare to the Real AI Evaluation

[H2] Proven Use Cases

People around the world trust Scala to build useful software. Popular domains include

Have another use case? Scaladex indexes awesome Scala libraries. Search in the box below.

[H2] Scala runs on the following platforms...

[IMG: the Java Virtual Machine]

[IMG: with JavaScript in your browser]

[IMG: natively with LLVM]

[H2] Ideal for teaching

[H2] The Scala language is maintained by

[IMG: Scala Center]

[IMG: Akka]

[IMG: VirtusLab]

[H3] The Scala Center is supported by

[IMG: EPFL]

[IMG: JetBrains]

[IMG: Gradle]

[IMG: Your company]

[H1] Community

[H2] Discourse
Forums

[IMG: Scala Users]

[H4] Scala Users
for general Scala questions, discussion and library announcements.

[IMG: Scala Contributors]

[H4] Scala Contributors
for Scala contributions, language evolution discussions, standard library, Scala platform evolution discussions and more.

[H2] Discord
Real-time chat

[H4] Scala

[H4] Scalameta

[H4] Play Framework

[H4] Typelevel

[H4] ZIO

More chat venues are listed below.

[H2] Moderation

The Scala community is moderated by the Moderation Team over all
the official communication channels hosted by the Scala
organisation. The moderation is governed by the Code of
Conduct.

[H3] Code of Conduct

[H3] Inclusive Language Guide

[H3] Moderation Team

[H2] Upcoming Events and Trainings

[IMG: The Scala Workshop]

[H4] The Scala Workshop

Brussels, Belgium

29 Jun 2026

[IMG: Scala Days]

[H4] Scala Days

Berlin, Germany

12 Oct 2026 - 13 Oct 2026

[IMG: Func Prog Conf]

[H4] Func Prog Conf

Stockholm, Sweden

14 Oct 2026

[IMG: Lambda World]

[H4] Lambda World

Malaga, Spain

29 Oct 2026 - 30 Oct 2026

See more events or add one to our events feed

See more training or add one to our feed

Popular ways to connect with the Scala community include forums, chat rooms,
local user groups, and conferences.
The community is also the source of many libraries, tools, and other resources
around Scala.
[H2] Forums
The Scala Center operates the following Discourse forums:
users.scala-lang.org: The main forum for
questions, discussions, and announcements about programming in Scala. Beginner
questions are very welcome. Any question can and should receive a courteous
and insightful answer. (Replaces the old scala-user and scala-announce
groups.)

contributors.scala-lang.org: For
anything related to moving Scala forward; from Scala Platform library
discussions, to Scala Improvement Process discussions, to development work on
the Scala compiler, standard library, and modules. Core maintainers and
open-source contributors are both welcome, as well as those who want to see
what’s coming down the pipe and would like to be involved. (Replaces the old
scala-internals, scala-language, scala-debate, scala-sips, and scala-tools
groups.)

teachers.scala-lang: Discussions
related to the usage of Scala to teach programming: material, tooling,
guidelines.
Discourse is an open-source forum and mailing list platform. You can participate
via the web, or you can use “mailing list mode”, where you receive posts in your
inbox and can reply to them via email. The web interface provides statistics,
upvoting, polls, and other features. Posts can be written in Markdown, including
syntax highlighting.
These forums are covered by the Scala Code of Conduct.
Akka operates a Discourse forum as well:
discuss.akka.io: For discussion of
the Akka libraries, Akka SDK, and reactive architectures.
[H2] Chat rooms
Our main chat platform is Discord, and the main Scala server is:
Scala
the #scala-users channel is especially beginner-friendly
the #scala-contributors channel is about moving Scala forward
the #jobs channel is the only place we allow job postings
ask on #admin if you have questions or suggestions about the server itself
there are many other channels, including #spark, #scala-js, and #scala-native

The server is covered by the Scala Code of Conduct.
Alternate clients such as Element are supported via a
Matrix bridge. Connect to #scala-lang:matrix.org to
access the main Discord channel, or explore #scala-space:matrix.org to see
channels from all over the Scala community (many are bridged in from other
places like Discord, Gitter, or IRC).
Scala-oriented Discord servers operated by the community include:
IntelliJ: the IntelliJ IDEA development
environment
Scalameta: Scalameta-based tooling: Metals,
Scalameta, Scalafix, Scalafmt, and Mdoc
Play Framework: the Play web framework
for Scala and Java
Typelevel: the Typelevel ecosystem for
pure-functional programming in Scala
ZIO: the ZIO ecosystem for Type-safe,
composable asynchronous and concurrent programming in Scala
Laminar: the Laminar, Native Scala.js
library for building user interfaces
Smithy4s: the smithy4s for generating
Scala code from Smithy files.
indigo: the Indigo, Scala 2D game engine
based on functional programming
Scala Space: Discord server for VirtusLab’s
and Software Mill’s open source projects
Business4s: Scala community focused
on product development and business
Creative Scala: Making Scala fun through
non-traditional means
English-language Scala rooms on other chat platforms besides Discord include:
scala_en (Telegram)
#scala (IRC)
International chat rooms are available as well:
Scala Fr (Discord)
scala/it (Discord)
Scala Jp (Discord)
Scala India (Discord)
Scala Poland
(Slack)
scala_ru (Telegram)
Scala Ukraine (Telegram)
Note also that Stack Overflow offers languages other than English, for example
the scala tag on es.stackoverflow.com.
[H2] Events
[H3] Conferences
See our events page.
[H3] Meetups
The Scalendar monthly newsletter lists upcoming events.
Scala user groups may be listed on
Meetup.
We update the following lists of meetups from time to time. Pull
requests with updates are also welcome. (Old meetups are removed
when they haven’t had a Scala event in the last year.)
[H4] Europe
Amsterdam
Berlin Brandenburg
Budapest
Gdansk
Kraków
Lisbon
London
Madrid
Oslo
Paris
Porto
Stockholm
UK and Europe
Warsaw
Wrocław
Zürich
[H4] North America
Atlanta
Boston
Dallas
San Francisco
SF Bay Area (Bay Area Scala)
SF Bay Area (Scala Bay)
[H4] Asia
Taiwan
[H3] ScalaBridge
Volunteers organizing free introductory Scala programming workshops for
underrepresented groups, to improve diversity in the Scala community.
London chapter
[H3] Tooling summits
Scala tooling summit is an event with a purpose of bringing together maintainers
of build tools, linters, IDEs, and other tools. These summits are usually held
alongside major Scala conferences. During the event they discuss ongoing
problems within the tooling ecosystem and work towards solving them.
Previously held tooling summits:
Scala Tooling Summit of September 2023
Scala Tooling Summit of March 2023
The announcement of each new tooling summit will be public.
[H2] The Scala Center
The Scala Center is an open source foundation that
brings together a coalition of individuals and organizations working together
to contribute to Scala. See the Center’s FAQ.
[H2] Ambassadors
Ambassadors are key figures in the Scala community: speakers, organizers,
teachers, content creators, open source maintainers, and so on. They are often
present at community events, or open to answering questions.
To learn more and discover who is an ambassador near you: see the dedicated
Scala Ambassadors page.
[H2] Scala jobs
Employers and job seekers can find each other in the #jobs channel of the
Scala Discord.
Job postings are not allowed in our other forums and chat rooms.
The Scala Reddit has a monthly “who is
hiring?” thread.
[H2] Scala on LinkedIn
The Scala Enthusiasts Group is a
place for Scala professionals to share information and come into contact with
people and companies using Scala.
[H2] Stack Overflow
Scala is an active
topic on Stack Overflow, a
very popular programmer Q&A site.
[H2] Reddit
There is a large and active Scala community on the community-managed
/r/Scala subreddit.
[H2] Sources of Scala news
Official:
Blog/News Page on this site
@scala-lang on Bluesky
@scala_lang on Mastodon
@scala_lang on X
Community:
Scala Times weekly Scala newspaper
This Week in Scala weekly Scala newspaper
Scala News source for Scala news and blog feeds
blog directory

Scala Space podcast by VirtusLab and SoftwareMill
Many Scala users are active on social media, sharing Scala-related
news items and opinions. Ask your Scala friends who they follow.
[H2] Learning resources
Our Online Courses page lists courses
offered by the Scala Center as well as paid courses from Rock the JVM.
Our Books page offers a small
selection of Scala books (many others exist).
There are too many other Scala learning resources out there for any
list to be exhaustive, but here are a few:
Scala Exercises
Scala Cookbook
[H2] Libraries and tools
Integrated Development Environments:
Scala IDEs discusses main Scala IDEs
Finding libraries:
Scaladex, maintained by the Scala Center, is
“an index of the known Scala ecosystem”
Awesome Scala is “a community driven
list of useful Scala libraries, frameworks and software”
Typelevel.org provides an assortment of popular
libraries and extensions to Scala.
Trending Scala repositories
on GitHub
Staying current:
Scala Times includes library releases
#ThisWeekInScala
includes library releases
[H2] Non-JVM platforms
Scala.js compiles Scala code to JavaScript
Scala Native compiles Scala code to LLVM for
native execution
The Scala Discord has #scala-js, #scala-native, and #scala-android channels.
[H2] Security
To receive security announcements or contact us about security issues, see our
security policy.
[H2] Reporting issues
If you’re having a problem with Scala, your first line of defense is our forums
and chat rooms. The unexpected behavior you’re seeing might not be a bug.
Especially if you’re new to the language, it’s best to discuss the matter with
more experienced users before filing a bug report.
That said, bugs do occur and bug reports are valuable. You can report bugs here:
Scala 2 compiler, standard library, and language spec:
scala/bug
Scala 3 compiler and standard library additions:
scala/scala3
Don’t forget to search past issues first to see if the issue has already been
reported.
[H2] Scala open source
Want to start making open-source contributions to projects in the Scala
ecosystem?
Scaladex lists
projects welcoming contributions.
Also, on GitHub, a common convention is to use the label “good first issue” on
issues that are especially easy on-ramps to getting started in a particular
repo:
“good first issue” tickets:
GitHub link
And, some repos also use a “help wanted” label if the maintainers especially
desire contributor attention:
“help wanted” tickets:
GitHub link
[H2] Phil Bagwell Memorial Scala Community Award
The Phil Bagwell Memorial Scala Community Award is
given to individuals who have made significant efforts to grow the Scala
Community.
[H2] Archives
Read-only archives of these retired groups remain available.
scala-user,
scala-announce,
scala-language,
scala-debate,
scala-internals,
scala-sips

[H1] All Available Versions

This page contains a comprehensive archive of Scala releases.

[H3] Current Releases

Current 3.8.x release: 3.8.3Released on March 31, 2026

Current 3.3.x LTS release: 3.3.7Released on October 13, 2025

Current 2.13.x release: 2.13.18Released on November 24, 2025

[H3] Maintenance Releases

Latest 2.12.x maintenance release: 2.12.21Released on December 11, 2025

Last 2.11.x maintenance release: 2.11.12Released on November 9, 2017

Last 2.10.x maintenance release: 2.10.7Released on November 9, 2017

[H3] All Releases

Scala 3.8.3

Scala 3.8.2

Scala 3.8.1

Scala 3.8.0

Scala 3.7.4

Scala 3.7.3

Scala 3.7.2

Scala 3.7.1

Scala 3.7.0

Scala 3.6.4

Scala 3.6.3

Scala 3.6.2

Scala 3.5.2

Scala 3.5.1

Scala 3.5.0

Scala 3.4.3

Scala 3.4.2

Scala 3.4.1

Scala 3.4.0

Scala 3.3.7 LTS

Scala 3.3.6 LTS

Scala 3.3.5 LTS

Scala 3.3.4 LTS

Scala 3.3.3 LTS

Scala 3.3.1 LTS

Scala 3.3.0 LTS

Scala 3.2.2

Scala 3.2.1

Scala 3.2.0

Scala 3.1.3

Scala 3.1.2

Scala 3.1.1

Scala 3.1.0

Scala 3.0.2

Scala 3.0.1

Scala 3.0.0

Scala 2.13.18

Scala 2.13.17

Scala 2.13.16

Scala 2.13.15

Scala 2.13.14

Scala 2.13.13

Scala 2.13.12

Scala 2.13.11

Scala 2.13.10

Scala 2.13.9

Scala 2.13.8

Scala 2.13.7

Scala 2.13.6

Scala 2.13.5

Scala 2.13.4

Scala 2.13.3

Scala 2.13.2

Scala 2.13.1

Scala 2.13.0

Scala 2.13.0-RC3

Scala 2.13.0-RC2

Scala 2.13.0-RC1

Scala 2.13.0-M5

Scala 2.13.0-M4

Scala 2.13.0-M3

Scala 2.13.0-M2

Scala 2.13.0-M1

Scala 2.12.21

Scala 2.12.20

Scala 2.12.19

Scala 2.12.18

Scala 2.12.17

Scala 2.12.16

Scala 2.12.15

Scala 2.12.14

Scala 2.12.13

Scala 2.12.12

Scala 2.12.11

Scala 2.12.10

Scala 2.12.9

Scala 2.12.8

Scala 2.12.7

Scala 2.12.6

Scala 2.12.5

Scala 2.12.4

Scala 2.12.3

Scala 2.12.2

Scala 2.12.1

Scala 2.12.0

Scala 2.12.0-RC2

Scala 2.12.0-RC1

Scala 2.12.0-M5

Scala 2.12.0-M4

Scala 2.12.0-M3

Scala 2.12.0-M2

Scala 2.12.0-M1

[H1] Install

[H2] Install Scala with cs setup (recommended)

To install Scala, it is recommended to use cs setup,
the Scala installer powered by Coursier. It installs everything necessary to use the latest Scala release from a
command line:

macOS

Linux

Windows

Other

Run the following command in your terminal, following the on-screen instructions:

brew install coursier/formulas/coursier && cs setup

Alternatively for Apple Silicon, or if you don't use Homebrew:

On the Apple Silicon (M1, M2, …) architecture:

curl -fL https://github.com/coursier/coursier/releases/latest/download/cs-aarch64-apple-darwin.gz | gzip -d > cs && chmod +x cs && (xattr -d com.apple.quarantine cs || true) && ./cs setup
Otherwise, on the x86-64 architecture:

curl -fL https://github.com/coursier/coursier/releases/latest/download/cs-x86_64-apple-darwin.gz | gzip -d > cs && chmod +x cs && (xattr -d com.apple.quarantine cs || true) && ./cs setup

Run the following command in your terminal, following the on-screen instructions.
On the x86-64 architecture:

curl -fL https://github.com/coursier/coursier/releases/latest/download/cs-x86_64-pc-linux.gz | gzip -d > cs && chmod +x cs && ./cs setup
Otherwise, on the ARM64 architecture:

curl -fL https://github.com/VirtusLab/coursier-m1/releases/latest/download/cs-aarch64-pc-linux.gz | gzip -d > cs && chmod +x cs && ./cs setup

Download and execute the Scala
installer for Windows based on Coursier, and follow the on-screen instructions.

Follow the documentation from Coursier on how to install and run cs setup.

Testing your setup

Check your setup with the command scala -version, which should output:

$ scala -version
Scala code runner version 3.3.7 -- Copyright 2002-2022, LAMP/EPFL
If that does not work, close and reopen your terminal; otherwise, you may need to log out and log back in (or reboot) in order for the changes to take
effect.

If you are just beginning your journey with Scala,
we recommend that you read our getting started guide, which expands upon these details, teaching you how to build
your first Scala project:

Get Started with Scala

[H2] Which version of Scala should I choose?
There are 2 distribution lines of Scala 3:
Scala Next currently 3.8.3 - The default to be used by most users, containing the latest features, bug fixes and improvements.
Scala LTS currently 3.3.7 - Advised to be used for publishing libraries.

[H2] Other ways to install Scala

Pick a Specific Release

Each Scala release has its own page listing alternative installation methods. Click the button above to
see the full list of Scala releases, or pick from the most recent releases below.

[H3] Current releases

Current 3.8.x release: 3.8.3Released on March 31, 2026

Current 3.3.x LTS release: 3.3.7Released on October 13, 2025

Current 2.13.x release: 2.13.18Released on November 24, 2025

[H3] Maintenance releases

Latest 2.12.x maintenance release: 2.12.21Released on December 11, 2025

Last 2.11.x maintenance release: 2.11.12Released on November 9, 2017

Last 2.10.x maintenance release: 2.10.7Released on November 9, 2017