Awesome Scala A community driven list of useful Scala libraries, frameworks and software. This is not a catalog of all the libraries, just a starting point for your explorations. Inspired by awesome-python . Other amazingly awesome lists can be found in the awesome-awesomeness list.
Also awesome is Scaladex , the searchable, tagged, and centralized index of Scala libraries.
Projects with over 500 stargazers are in bold.
Your contributions are always welcome! Please submit a pull request or create an issue to add a new framework, library or software to the list. Do not submit a project that hasn’t been updated in the past 6 months or is not awesome.
Don't modify README.md in your pull request. It is automatically generated. Modify template.md instead.
Name
Description
GitHub Activity
Name
Description
GitHub Activity
Database access libraries in Scala.
Name
Description
GitHub Activity
akka-persistence-gcp-datastore akka-persistence-gcp-datastore is a journal and snapshot store plugin for akka-persistence using google cloud firestore in datastore mode.
anorm The Anorm database library
clickhouse-scala-client Clickhouse Scala Client with Reactive Streams support
couchbase-jvm-clients The Couchbase Monorepo for JVM Clients: Java, Scala, io-core…
doobie Functional JDBC layer for Scala.
elastic4s 🔍 Elasticsearch Scala Client - Reactive, Non Blocking, Type Safe, HTTP Client
etcd4s Scala etcd client implementing V3 APIs
laserdisc A Future-free Fs2 native pure FP Redis client
mysql-binlog-stream None
neotypes Scala lightweight, type-safe, asynchronous driver for neo4j
pulsar4s Idiomatic, typesafe, and reactive Scala client for Apache Pulsar
zio-quill Compile-time Language Integrated Queries for Scala
ReactiveMongo 🍃 Non-blocking, Reactive MongoDB Driver for Scala
rediscala Non-blocking, Reactive Redis driver for Scala (with Sentinel support)
relate Performant database access in Scala
sangria Scala GraphQL implementation
scala-forklift Type-safe data migration tool for Slick, Git and beyond.
scalarelational Type-Safe framework for defining, modifying, and querying SQL databases
scalikejdbc A tidy SQL-based DB access library for Scala developers. This library naturally wraps JDBC APIs and provides you easy-to-use APIs.
scanamo Simpler DynamoDB access for Scala
slick Slick (Scala Language Integrated Connection Kit) is a modern database query and access library for Scala
slick-pg Slick extensions for PostgreSQL
squery Simple SQL queries in Scala 3
squeryl A Scala DSL for talking with databases with minimum verbosity and maximum type safety
molecule Molecule translates custom Scala code to database queries for multiple databases.
zio-redis A ZIO-based redis client
skunk A data access library for Scala + Postgres.
kvs Highly available distributed strong eventual consistent and sequentially consistent storage with feeds, sorting and search
Name
Description
GitHub Activity
Graphical User Interfaces Libraries for creation of graphical user interfaces
Name
Description
GitHub Activity
scalafx ScalaFX simplifies creation of JavaFX-based user interfaces in Scala
Scala frameworks for web development.
Name
Description
GitHub Activity
analogweb-scala Tiny High Performance HTTP Server for Scala
cask Cask: a Scala HTTP micro-framework. Cask makes it easy to set up a website, backend server, or REST API using Scala
finatra Fast, testable, Scala services built on TwitterServer and Finagle
framework Lift Framework
playframework The Community Maintained High Velocity Web Framework For Java and Scala.
scalajs-react Facebook's React on Scala.JS
scalatra Tiny Scala high-performance, async web framework, inspired by Sinatra
sharaf Minimalistic Scala 3 web framework
unfiltered A toolkit for servicing HTTP requests in Scala
youi Next generation user interface and application development in Scala and Scala.js for web, mobile, and desktop.
Scala libraries for Reactive Web development
Name
Description
GitHub Activity
Binding.scala Reactive data-binding for Scala
udash-core Scala framework for building beautiful and maintainable web applications.
vertx-lang-scala Vert.x for Scala
Data Binding and Validation Scala libraries for data binding and validation
Name
Description
GitHub Activity
dupin Minimal, idiomatic, customizable validation Scala library.
octopus Scala library for boilerplate-free validation
Scala libraries for i18n.
Name
Description
GitHub Activity
scaposer GNU Gettext .po file loader for Scala
Libraries for implementing authentications schemes.
Name
Description
GitHub Activity
play-googleauth Simple play module for authenticating against Google
play-pac4j Security library for Play framework 2 in Java and Scala: OAuth, CAS, SAML, OpenID Connect, LDAP, JWT...
scala-oauth2-provider OAuth 2.0 server-side implementation written in Scala
Cryptography and Encryption Libraries.
Name
Description
GitHub Activity
scrypto Cryptographic primitives for Scala
jose Extensible JOSE library for Scala
Libraries for code testing.
Name
Description
GitHub Activity
bencher 🐰 Bencher - Continuous Benchmarking
cornichon Testing tool in Scala for HTTP JSON API
gatling Modern Load Testing as Code
minitest The super light testing library for Scala and Scala.js
mockito-scala Mockito for Scala language
munit Scala testing library with actionable errors and extensible APIs
scalacheck Property-based testing for Scala
ScalaMock Native Scala mocking framework
scalaprops property based testing library for Scala
scalatest A testing tool for Scala and Java developers
specs2 Software Specifications for Scala
stryker4s Mutation testing for Scala
weaver-test A test framework that runs everything in parallel.
testcontainers-scala Docker containers for testing in scala
utest A simple testing framework for Scala
Libraries for work with json.
Name
Description
GitHub Activity
argonaut Purely functional JSON parser and library in scala.
borer Efficient CBOR and JSON (de)serialization in Scala
circe Yet another JSON library for Scala
diffson A scala diff/patch library for Json
jackson-module-scala Add-on module for Jackson (https://github.com/FasterXML/jackson ) to support Scala-specific datatypes
jawn Jawn is for parsing jay-sawn (JSON)
json4s JSON library
jsoniter-scala Scala macros for compile-time generation of safe and ultra-fast JSON codecs + circe booster
ninny-json JSON typeclasses that know the difference between null and absent fields
play-json The Play JSON library
ScalaJack Fast JSON parser/generator for Scala
spray-json A lightweight, clean and simple JSON implementation in Scala
tupson Stupid simple Scala 3 library for writing and reading JSON
zio-json Fast, secure JSON library with tight ZIO integration.
Libraries for work with YAML.
Name
Description
GitHub Activity
Libraries for work with CSV.
Name
Description
GitHub Activity
kantan.csv CSV handling library for Scala
scala-csv CSV Reader/Writer for Scala
spata Functional, stream-based CSV processor for Scala
Libraries for serializing and deserializing data for storage or transport.
Name
Description
GitHub Activity
borer Efficient CBOR and JSON (de)serialization in Scala
avro4s Avro schema generation and serialization / deserialization for Scala
chill Scala extensions for the Kryo serialization library
ScalaPB Protocol buffer compiler for Scala.
scodec Scala combinator library for working with binary data
scrooge A Thrift parser/generator
upickle uPickle: a simple, fast, dependency-free JSON & Binary (MessagePack) serialization library for Scala
proto Lightweight and fast serialization library for Scala 2/3 based on Protocol Buffers with macros
Science and Data Analysis Libraries for scientific computing, data analysis and numerical processing.
Name
Description
GitHub Activity
algebird Abstract Algebra for Scala
ipex-llm Accelerate local LLM inference and finetuning (LLaMA, Mistral, ChatGLM, Qwen, Baichuan, Mixtral, Gemma, Phi, MiniCPM, etc.) on Intel XPU (e.g., local PC with iGPU and NPU, discrete GPU such as Arc, Flex and Max); seamlessly integrate with llama.cpp, Ollama, HuggingFace, LangChain, LlamaIndex, GraphRAG, DeepSpeed, vLLM, FastChat, Axolotl, etc.
breeze Breeze is/was a numerical processing library for Scala.
doddle-model 🍰 doddle-model: machine learning in Scala.
libra A dimensional analysis library based on dependent types
LoMRF LoMRF is an open-source implementation of Markov Logic Networks
mgo Purely functional genetic algorithms for multi-objective optimisation
MLLib Machine Learning framework for Spark
numsca numsca is numpy for scala
onnx-scala An ONNX (Open Neural Network eXchange) API and backend for typeful, functional deep learning and classical machine learning in Scala 3
openmole Workflow engine for exploration of simulation models using high throughput computing
Optimus Optimus is a mathematical programming library for Scala.
OscaR a Scala toolkit for solving Operations Research problems
rings Rings: efficient JVM library for polynomial rings
smile Statistical Machine Intelligence & Learning Engine
spire Powerful new number types and numeric abstractions for Scala.
squants The Scala API for Quantities, Units of Measure and Dimensional Analysis
zeppelin Web-based notebook that enables data-driven, interactive data analytics and collaborative documents with SQL, Scala and more.
spark-nlp State of the Art Natural Language Processing
VecMatLib Open source Scala library that provides data structures for vectors and matrices
Name
Description
GitHub Activity
flink Apache Flink
gridscale Scala library for accessing various file, batch systems, job schedulers and grid middlewares.
kafka Mirror of Apache Kafka
alpakka-kafka Alpakka Kafka connector - Alpakka is a Reactive Enterprise Integration library for Java and Scala, based on Reactive Streams and Akka.
scio A Scala API for Apache Beam and Google Cloud Dataflow.
Scrunch A Scala wrapper for Apache Crunch which provides a framework for writing, testing, and running MapReduce pipelines.
spark Apache Spark - A unified analytics engine for large-scale data processing
gallia-core A schema-aware Scala library for data transformation
nussknacker Low-code tool for automating actions on real time data
Stream processing for the users.
Libraries for creation of command line interfaces
Name
Description
GitHub Activity
decline A composable command-line parser for Scala.
mainargs A small, convenient, dependency-free library for command-line argument parsing in Scala
scallop a simple Scala CLI parsing library
scopt command line options parsing for Scala
Image processing and image analysis 2D and 3D image processing and image analysis
Name
Description
GitHub Activity
scalismo Scalable Image Analysis and Shape Modelling
scrimage JVM - Java, Kotlin, Scala image processing library
Sound processing and music
Name
Description
GitHub Activity
Functional Reactive Programming Event streams, signals, observables, etc.
Name
Description
GitHub Activity
fs2 Compositional, streaming I/O library for Scala
iteratee Iteratees for Cats
monix Asynchronous, Reactive Programming for Scala and Scala.js.
REScala REScala - distributed and reactive programming embedded in OO and FP programs.
zio ZIO — A type-safe, composable library for async and concurrent programming in Scala
vertx-lang-scala Vert.x for Scala
Modularization and Dependency Injection Modularization of applications, dependency injection, etc.
Name
Description
GitHub Activity
airframe Essential Building Blocks for Scala
izumi Productivity-oriented collection of lightweight fancy stuff for Scala toolchain
macwire Zero-cost, compile-time, type-safe dependency injection library.
scaldi Lightweight Scala Dependency Injection Library
jam Incredibly simple DI Scala library.
Libraries and frameworks for writing distributed applications.
Name
Description
GitHub Activity
akka Build highly concurrent, distributed, and resilient message-driven applications on the JVM
annette Platform to build distributed, scalable, enterprise-wide business applications
finagle A fault tolerant, protocol-agnostic RPC system
poppet Minimal, type-safe RPC Scala library.
automorph RPC client and server library for Scala
Scala extensions.
Name
Description
GitHub Activity
Ammonite Scala Scripting
better-files Simple, safe and intuitive Scala I/O
blindsight Blindsight is a Scala logging API with DSL based structured logging, fluent logging, semantic logging, flow logging, and context aware logging.
cats Lightweight, modular, and extensible library for functional programming.
chimney Scala library for boilerplate-free, type-safe data transformations
chronoscala A JSR-310 port of nscala_time
Dsl.scala A framework to create embedded Domain-Specific Languages in Scala
each A macro library that converts native imperative syntax to scalaz's monadic expressions
eff Eff monad for cats - https://atnos-org.github.io/eff
enableIf.scala A library that toggles Scala code at compile-time, like #if in C/C++
enumeratum A type-safe, reflection-free, powerful enumeration implementation for Scala with exhaustive pattern match warnings and helpful integrations.
log4s High-performance SLF4J wrapper for Scala.
izumi Productivity-oriented collection of lightweight fancy stuff for Scala toolchain
Monocle Optics library for Scala
nscala-time A new Scala wrapper for Joda Time based on scala-time
quicklens Modify deeply nested case class fields
refined Refinement types for Scala
scala-async An asynchronous programming facility for Scala
scala-graph Graph for Scala is intended to provide basic graph functionality seamlessly fitting into the Scala Collection Library. Like the well known members of scala.collection, Graph for Scala is an in-memory graph library aiming at editing and traversing graphs, finding cycles etc. in a user-friendly way.
scala-logging Convenient and performant logging library for Scala wrapping SLF4J.
scalameta Library to read, analyze, transform and generate Scala programs
scalaz Principled Functional Programming in Scala
scribe The fastest logging library in the world. Built from scratch in Scala and programmatically configurable.
shapeless Generic programming for Scala
simulacrum First class syntax support for type classes in Scala
squid Squid – type-safe metaprogramming and compilation framework for Scala
tinylog tinylog is a lightweight logging framework for Java, Kotlin, Scala, and Android
util Wonderful reusable code from Twitter
Projects that don't fit into any specific category.
Name
Description
GitHub Activity
Ammonite Scala Scripting
bootzooka Simple project to quickly start developing a Scala-based microservice or web application, without the need to write login, user registration etc.
eclair A scala implementation of the Lightning Network.
fansi Scala/Scala.js library for manipulating Fancy Ansi colored strings
fs2-aws fs2 utilities to interact with AWS
mailgun4s Mailgun API implementation in Scala
managerial A zero-dependency Scala library for managing resources monadically
media4s Scala command-line wrapper around ffmpeg, ffprobe, ImageMagick, and other tools relating to media.
play-swagger Swagger spec generator for play framework
PPrint Pretty-printing value, types and type-signatures in Scala
pureconfig A boilerplate-free library for loading configuration files
service-chassis A scala chassis to get your applications and services bootstrapped quickly
spliff Efficient diffing in Scala
scountries Scala library that provides an enumeration of ISO 3166 codes for countries, along with their subdivisions.
scurl-detector Scala library that detects and extracts URLs from text.
aptus-core A utility library aiming to simplify the Scala coding experience.
Scala libraries and wrappers for Android development.
Name
Description
GitHub Activity
scaloid Scaloid makes your Android code easy to understand and maintain.
Scala libraries and wrappers for HTTP clients.
Name
Description
GitHub Activity
akka-http The Streaming-first HTTP server/module of Akka
reboot Scala wrapper for the Java AsyncHttpClient.
finch Scala combinator library for building Finagle HTTP services
http4s A minimal, idiomatic Scala interface for HTTP
lolhttp An HTTP Server and Client library for Scala.
requests-scala A Scala port of the popular Python Requests HTTP client: flexible, intuitive, and straightforward to use.
scalaxb scalaxb is an XML data binding tool for Scala.
sttp The Scala HTTP client you always wanted!
tapir Rapid development of self-documenting APIs
endpoints4s Describe HTTP endpoints in Scala and derive clients, servers, and documentation
frontier A lightweight HTTP/WebSocket server built with ZIO
Scala libraries for interactions with the Web of Data, and other RDF tools.
Name
Description
GitHub Activity
scowl A Scala DSL for programming with the OWL API.
Scala libraries for gathering metrics and monitoring applications.
Name
Description
GitHub Activity
metrics-scala The scala API for Dropwizard's Metrics.
Scala libraries for creating parsers.
Name
Description
GitHub Activity
atto friendly little parsers
fastparse Writing Fast Parsers Fast in Scala
parboiled2 A macro-based PEG parser generator for Scala 2.10+
scala-parser-combinators simple combinator-based parsing for Scala. formerly part of the Scala standard library, now a separate community-maintained module
cats-parse A parsing library for the cats ecosystem
Sbt plugins to make your life easier.
Name
Description
GitHub Activity
better-monadic-for Desugaring scala for without implicit withFilters
coursier Pure Scala Artifact Fetching
mdoc Typechecked markdown documentation for Scala
sbt-api-mappings An Sbt plugin that fills apiMappings for common Scala libraries.
sbt-assembly Deploy über-JARs. Restart processes. (port of codahale/assembly-sbt)
sbt-buildinfo I know this because build.sbt knows this.
sbt-ci-release sbt plugin to automate Sonatype releases from GitHub Actions
sbt-dependency-check SBT Plugin for OWASP DependencyCheck. Monitor your dependencies and report if there are any publicly known vulnerabilities (e.g. CVEs). 🌈
sbt-docker Create Docker images directly from sbt
sbt-doctest Doctest for scala
sbt-ghpages git, site and ghpages support for sbt projects.
sbt-header sbt-header is an sbt plugin for creating file headers, e.g. copyright headers
sbt-hepek Sbt plugin for rendering Scala objects to files. And more!
sbt-ide-settings SBT plugin for tweaking various IDE settings
sbt-jmh "Trust no one, bench everything." - sbt plugin for JMH (Java Microbenchmark Harness)
sbt-microsites An sbt plugin to create awesome microsites for your project
mima A tool for catching binary incompatibility in Scala
sbt-native-packager sbt Native Packager
sbt-pack A sbt plugin for creating distributable Scala packages.
sbt-pgp PGP plugin for sbt
sbt-release A release plugin for sbt
sbt-scala-js-map A Sbt plugin that configures source mapping for Scala.js projects hosted on Github
sbt-scalafmt sbt plugin for Scalafmt
sbt-scoverage sbt plugin for scoverage
sbt-site Site generation for sbt
sbt-sonatype A sbt plugin for publishing Scala/Java projects to the Maven central.
sbt-unidoc sbt plugin to create a unified Scaladoc or Javadoc API document across multiple subprojects.
sbt-updates sbt plugin that can check Maven and Ivy repositories for dependency updates
sbt-eclipse Plugin for sbt to create Eclipse project definitions
splain better implicit errors for scala
xsbt-web-plugin Servlet support for sbt
sbt-git A git plugin for sbt
XML and HTML generation and processing
Name
Description
GitHub Activity
scala-scraper A Scala library for scraping content from HTML pages
xs4s XML Streaming for Scala including FS2/cats support
phobos Efficient and expressive XML data-binding library for Scala
Name
Description
GitHub Activity
Laika Site and E-book Generator and Customizable Text Markup Transformer for sbt, Scala and Scala.js
JavaScript generation and interop libraries.
Name
Description
GitHub Activity
scala-js Scala.js, the Scala to JavaScript compiler
Name
Description
GitHub Activity
akka-quartz-scheduler Quartz Extension and utilities for cron-style scheduling in Akka
Web templating engines.
Name
Description
GitHub Activity
scalatags ScalaTags is a small XML/HTML construction library for Scala.
scalate Scalate is a Scala based template engine which supports HAML, Mustache and JSP, Erb and Velocity style syntaxes.
twirl Twirl is Play's default template engine
hepek Typesafe HTML templates and static site generator in pure Scala
Name
Description
GitHub Activity
bloop Bloop is a build server and CLI tool to compile, test and run Scala fast from any editor or build tool.
coursier Pure Scala Artifact Fetching
dregex dregex is a Java library that implements a regular expression engine using deterministic finite automata (DFA). It supports some Perl-style features and yet retains linear matching time, and also offers set operations.
fast-string-interpolator Scala macro that generates ultra-fast string interpolators.
fastring Extremely fast string formatting
gitbucket A Git platform powered by Scala with easy installation, high extensibility & GitHub API compatibility
giter8 a command line tool to apply templates defined on GitHub
metals Scala language server with rich IDE features 🚀
mill Mill is a fast JVM build tool that supports Java and Scala. 2-3x faster than Gradle and 5-10x faster than Maven for common workflows, Mill aims to make your project’s build process performant, maintainable, and flexible
sbt sbt, the interactive build tool
scalafix Refactoring and linting tool for Scala
Scalafmt Code formatter for Scala
scalariform Scala source code formatter
scapegoat Scala compiler plugin for static code analysis
wartremover Flexible Scala code linting tool
scala2plantuml Scala2PlantUML generates PlantUML diagrams from Scala code.
Libraries to aid with geospatial calculations and artifacts.
Name
Description
GitHub Activity
geotrellis GeoTrellis is a geographic data processing engine for high performance applications.
osm4scala Scala and Spark library focused on reading OpenStreetMap Pbf files.
rtree2d RTree2D is a 2D immutable R-tree for ultra-fast nearest and intersection queries in plane and spherical coordinates
stac4s a scala library with primitives to build applications using the SpatioTemporal Asset Catalogs specification
franklin A STAC/OGC API Features Web Service
DevOps related tools and libraries.
Name
Description
GitHub Activity
skuber A Scala Kubernetes client library
Nice books, blogs and other resources to learn Scala
Foundations of Functional Programming in Scala - a professional video course with exercises covering covers functional principles, custom IO (effects) and functional design.Scala Algorithms - a collection of nearly 100 algorithms in pure-functional Scala with test cases, explanations and a web-based IDE. Built with http4s & Scala.js.
Community Members' Blogs
The Scala Logs - Interviewing developers, open source contributors, subject matter experts, and the like to talk about FP, Scala, open source, and their interests.Scala Love - Podcast about the Scala Programming Language and its communityCoRecursive Interviews - In-depth Interviews with software developers, often on the subject of scala libraries and functional programming.Scala for Fun & Profit - Interviewing Scala users and companies.
