Table of Contents
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
casbah Casbah is now officially end-of-life (EOL).
clickhouse-scala-client Clickhouse Scala Client with Reactive Streams support
couchbase-jvm-clients The Couchbase Monorepo for JVM Clients: Java, Scala, io-core…
couchdb-scala A purely functional Scala client for CouchDB
d4s Dynamo DB Database Done Scala-way
doobie Functional JDBC layer for Scala.
elastic4s Elasticsearch Scala Client – Reactive, Non Blocking, Type Safe, HTTP Client
etcd4s Scala etcd client implementing V3 APIs
finagle-postgres PostgreSQL protocol support for Finagle
laserdisc A Future-free Fs2 native pure FP Redis client
mysql-binlog-stream None
longevity A Persistence Framework for Scala and NoSQL
lucene4s Light-weight convenience wrapper around Lucene to simplify complex tasks and add Scala sugar.
mapperdao A Scala ORM library
memcontinuationed Memcached client for Scala
morpheus Reactive type-safe Scala driver for SQL databases
neo4akka Neo4j Scala client using Akka-Http
neotypes Scala lightweight, type-safe, asynchronous driver for neo4j
phantom Schema safe, type-safe, reactive Scala driver for Cassandra/Datastax Enterprise
pulsar4s Idiomatic, typesafe, and reactive Scala client for Apache Pulsar
quill Compile-time Language Integrated Queries for Scala
reactivecouchbase-rs-core New ReactiveCouchbase driver using reactive-streams
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
salat Salat is a simple serialization library for case classes.
sangria Scala GraphQL implementation
scala-activerecord ActiveRecord-like ORM library for Scala
scala-forklift Type-safe data migration tool for Slick, Git and beyond.
scala-redis A scala library for connecting to a redis server, or a cluster of redis nodes using consistent hashing on the client side.
scala-sql scala SQL api
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
scredis Non-blocking, ultra-fast Scala Redis client built on top of Akka IO, used in production at Livestream
scruid Scala + Druid: Scruid. A library that allows you to compose queries in Scala, and parse the result back into typesafe classes.
shade Memcached client for Scala
slick Scala Language Integrated Connection Kit
slick-pg Slick extensions for PostgreSQL
sorm A functional boilerplate-free Scala ORM
squeryl A Scala DSL for talking with databases with minimum verbosity and maximum type safety
molecule Scala meta-DSL for the Datomic database
Name
Description
GitHub Activity
op-rabbit The Opinionated RabbitMQ Library for Scala and Akka
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
chaos A lightweight framework for writing REST services in Scala.
colossus I/O and Microservice library for Scala
finatra Fast, testable, Scala services built on TwitterServer and Finagle
framework Lift Framework
peregrine Async lightweight Scala web framework
playframework Play Framework
pagelets A module for the Play Framework to build highly modular applications
reactive A simple FRP library and a web UI framework built on it
scalajs-react Facebook’s React on Scala.JS
scalatra Tiny Scala high-performance, async web framework, inspired by Sinatra
skinny-framework 🚝 “Scala on Rails” – A full-stack web app framework for rapid development in Scala
suzaku Suzaku web UI framework for Scala
unfiltered A toolkit for servicing HTTP requests in Scala
xitrum Async and clustered Scala web framework and HTTP(S) server
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
korolev Single Page Applications running on the server side.
udash-core Scala framework for building beautiful and maintainable web applications.
vertx-lang-scala Vert.x for Scala
widok Reactive web framework for the JVM and Scala.js
Scala libraries for data binding and validation
Name
Description
GitHub Activity
accord Accord: A sane validation library for Scala
dupin Minimal, idiomatic, customizable validation for Scala.
form-binder A micro data binding and validating framework, very easy to use and hack
octopus Scala library for boilerplate-free validation
veto If you don’t agree with the data
Scala libraries for i18n.
Name
Description
GitHub Activity
scala-xgettext Scala compiler plugin that acts like GNU xgettext command to extract i18n strings in Scala source code files to Gettext .po file
scaposer GNU Gettext .po file loader for Scala
Libraries for implementing authentications schemes.
Name
Description
GitHub Activity
akka-http-session Web & mobile client-side akka-http sessions, with optional JWT support
aws-request-signer Scala library to sign HTTP requests to AWS services.
OAuth2-mock-play An implementation of an OAuth2 server designed for mocking/testing
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…
play-silhouette Silhouette is an authentication library for Play Framework applications that supports several authentication methods, including OAuth1, OAuth2, OpenID, CAS, 2FA, TOTP, Credentials, Basic Authentication or custom authentication schemes.
play2-auth Play2.x Authentication and Authorization module
scala-oauth2-provider OAuth 2.0 server-side implementation written in Scala
securesocial A module that provides OAuth, OAuth2 and OpenID authentication for Play Framework applications
Libraries for implementing authorization strategies.
Name
Description
GitHub Activity
deadbolt-2 An authorization module for the Play framework
Cryptography and Encryption Libraries.
Libraries for code testing.
Name
Description
GitHub Activity
cornichon Scala DSL for testing 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
scalacheck Property-based testing for Scala
scalameter Microbenchmarking and performance regression testing framework for the JVM platform.
ScalaMock Native Scala mocking framework
scalaprops property based testing library for Scala
scalatest A testing tool for Scala and Java developers
scalive Connect a Scala REPL to running JVM processes without any prior setup
specs2 Software Specifications for Scala
stryker4s Mutation testing for Scala. Work in progress…
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.
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 A single AST to be used by other scala json libraries
jsoniter-scala Scala macros for compile-time generation of safe and ultra-fast JSON codecs
json Persist-Json, a Fast Json Parser Written in Scala
ninny-json JSON typeclasses that know the difference between null and absent fields
play-json The Play JSON library
pushka ABANDONED Pure Scala serialization library with annotations
qbproject Source Code for qb
sbt-json sbt plugin that generates Scala case classes for easy, statically typed and implicit access of JSON data e.g. from API responses
scala-jsonapi Scala support library for integrating the JSON API spec with Spray, Play! or Circe
ScalaJack Fast JSON parser/generator for Scala
spray-json A lightweight, clean and simple JSON implementation in Scala
Libraries for work with YAML.
Name
Description
GitHub Activity
moultingyaml Scala wrapper for SnakeYAML
Libraries for work with CSV.
Name
Description
GitHub Activity
fm-flatfile Scala Library for Reading Flat File Data (CSV/TSV/XLS/XLSX)
kantan.csv CSV handling library for Scala
scala-csv CSV Reader/Writer for Scala
Libraries for serializing and deserializing data for storage or transport.
Name
Description
GitHub Activity
avro-codegen Scala code generator for Avro schemas.
avro4s Avro schema generation and serialization / deserialization for Scala
chill Scala extensions for the Kryo serialization library
msgpack-scala MessagePack serializer implementation for Scala / msgpack.org[Scala]
ScalaBuff the scala protocol buffers (protobuf) compiler
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
Libraries for scientific computing, data analysis and numerical processing.
Name
Description
GitHub Activity
algebird Abstract Algebra for Scala
axle Axle Domain Specific Language for Scientific Cloud Computing and Visualization
BigDL BigDL: Distributed Deep Learning Framework for Apache Spark
breeze Breeze is a numerical processing library for Scala.
Clustering4Ever C4E, a JVM friendly library written in Scala for both local and distributed (Spark) Clustering.
doddle-model 🍰 doddle-model: machine learning in Scala.
factorie FACTORIE is a toolkit for deployable probabilistic modeling, implemented as a software library in Scala. It provides its users with a succinct language for creating relational factor graphs, estimating parameters and performing inference.
figaro Figaro Programming Language and Core Libraries
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
nd4s ND4S: N-Dimensional Arrays for Scala. Scientific Computing a la Numpy. Based on ND4J.
numsca numsca is numpy for scala
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
units Scala Units of Measure Types
predictionio PredictionIO, a machine learning server for developers and ML engineers.
rings Rings: efficient JVM library for polynomial rings
smile Statistical Machine Intelligence & Learning Engine
spark-notebook Interactive and Reactive Data Science using Scala and Spark.
spire Powerful new number types and numeric abstractions for Scala.
squants The Scala API for Quantities, Units of Measure and Dimensional Analysis
swiftlearner SwiftLearner: Scala machine learning library
Synapses A lightweight library for neural networks that runs anywhere
tensorflow_scala TensorFlow API for the Scala Programming Language
tyche Statistics utilities for the JVM – in Scala!
zeppelin Web-based notebook that enables data-driven, interactive data analytics and collaborative documents with SQL, Scala and more.
Name
Description
GitHub Activity
BIDMach CPU and GPU-accelerated Machine Learning Library
flink Apache Flink
incubator-retired-gearpump Mirror of Apache Gearpump (Incubating)
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.
scalding A Scala API for Cascading
schemer Schema registry for CSV, TSV, JSON, AVRO and Parquet schema. Supports schema inference and GraphQL API.
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
spark-deployer Deploy Spark cluster in an easy way.
sparkplug Spark package to “plug” holes in data using SQL based rules ⚡️ 🔌
sparta Real Time Analytics and Data Pipelines based on Spark Streaming
summingbird Streaming MapReduce with Scalding and Storm
Vegas The missing MatPlotLib for Scala + Spark
Libraries for creation of command line interfaces
Name
Description
GitHub Activity
clist Command Line Interface Scala Toolkit
decline A composable command-line parser for Scala.
scallop a simple Scala CLI parsing library
scopt command line options parsing for Scala
2D and 3D image processing and image analysis
Name
Description
GitHub Activity
scala-phash Image comparison by hash codes
scalismo Scalable Image Analysis and Shape Modelling
scrimage Java, Scala and Kotlin image processing library
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.
reactors A concurrent reactive programming framework.
reactor-scala-extensions A scala extension for Project Reactor’s Flux and Mono
REScala REScala – reactive programming in OO applications
RxScala RxScala – Reactive Extensions for Scala – a library for composing asynchronous and event-based programs using observable sequences
scala.frp Functional Reactive Programming for Scala
scala.rx An experimental library for Functional Reactive Programming in Scala
zio ZIO — A type-safe, composable library for async and concurrent programming in Scala
SynapseGrid SynapseGrid is a framework for constructing dynamic low latency data flow systems.
vertx-lang-scala Vert.x for Scala
Modularization of applications, dependency injection, etc.
Name
Description
GitHub Activity
airframe Essential Building Blocks for Scala
cableguy Yet another Scala Dependency Injection Library
izumi Productivity-oriented collection of lightweight fancy stuff for Scala toolchain
macwire Lightweight and Nonintrusive Scala Dependency Injection Library
scala-guice Scala extensions for Google Guice
scaldi Lightweight Scala Dependency Injection Library
sclasner Scala classpath scanner
subcut Scala Uniquely Bound Classes Under Traits
Libraries and frameworks for writing distributed applications.
Name
Description
GitHub Activity
akka Build highly concurrent, distributed, and resilient message-driven applications on the JVM
akka-tracing A distributed tracing extension for Akka. Provides integration with Play framework, Spray and Akka HTTP.
annette Platform to build distributed, scalable, enterprise-wide business applications
autobreaker Automatically wrap Scala classes that return Futures with a Circuit Breaker
clump A library for expressive and efficient service composition
curiodb Distributed NoSQL Database
finagle A fault tolerant, protocol-agnostic RPC system
glokka Library to register and lookup actors by names in an Akka cluster
lagom Reactive Microservices for the JVM
parapet A purely functional library to build distributed and event-driven systems
poppet Minimal, type-safe RPC Scala library.
reactors A foundational framework for distributed programming.
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.
cassovary Cassovary is a simple big graph processing library for the JVM
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.
Freasy-Monad Easy way to create Free Monad using Scala macros with first-class Intellij support.
freedsl Practical effect composition library based on abstract wrapping type and the free monad
freestyle A cohesive & pragmatic framework of FP centric Scala libraries
hamsters A mini Scala utility library
idid A common interface for different Id types
lamma Lamma schedule generator for Scala is a professional schedule generation library for periodic schedules like fixed income coupon payment, equity deravitive fixing date generation etc.
larray Large off-heap arrays and mmap files for Scala and Java
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
logging Scala Logging Library
quicklens Modify deeply nested case class fields
scala-records Labeled records for Scala based on structural refinement types and macros.
refined Simple refinement types for Scala
resolvable None
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
Scalactic Small library of utilities related to quality that helps keeping code clear and correct.
scalaz Principled Functional Programming in Scala
scribe Practical logging framework that doesn’t require any other logging framework and can be completely configured programmatically.
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
stateless-future Asynchronous programming in fully featured Scala syntax.
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
Agora Library of vote-counting algorithms for elections.
Ammonite Scala Scripting
aws4s Non-blocking AWS SDK for Scala exposing strongly-typed APIs built on top of http4s, fs2 and cats
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
google4s A lean, functional library for Google Cloud Services in Scala
google-api-scala This API is a wrapper for the google java libraries. Currently mapping Admin Directory, Drive, and Calendar.
mailgun4s Mailgun API implementation in Scala
media4s Scala command-line wrapper around ffmpeg, ffprobe, ImageMagick, and other tools relating to media.
miniboxing-plugin Miniboxing is a program transformation that improves the performance of Scala generics when used with primitive types. It can speed up generic collections by factors between 1.5x and 22x, while maintaining bytecode duplication to a minimum. You can easily add miniboxing to your sbt project:
YahooFinanceScala A non-blocking Yahoo Finance Scala client
ostinato A chess library that runs on the server (Scala) and on the browser (ScalaJS).
pdf4s Simplified wrapper to create PDFs in Scala
play-swagger Swagger spec generator for play framework
powerscala Powerful framework providing many useful utilities and features on top of the Scala language.
PPrint Pretty-printing value, types and type-signatures in Scala
pureconfig A boilerplate-free library for loading configuration files
REPLesent A neat little tool to build presentations using the Scala REPL
scala-ssh Remote shell access via SSH for your Scala applications
scalan Generic framework for development of domain-specific compilers in Scala
scala-stm A library-based Software Transactional Memory (STM) for Scala, coupled with transactional sets and maps
Scavenger An experimental automated theorem prover.
service-chassis A scala chassis to get your applications and services bootstrapped quickly
settler boilerplate-free typed settings generation in Scala
YahooFinanceScala A non-blocking Yahoo Finance Scala client
Scala libraries and wrappers for Android development.
Name
Description
GitHub Activity
sbt-android An easy-to-use sbt plugin for working with all Android projects
gradle-android-scala-plugin gradle-android-scala-plugin adds scala language support to official gradle android plugin
macroid A modular functional UI language for Android
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
fintrospect Implement fast, type-safe HTTP webservices for Finagle
http4s A minimal, idiomatic Scala interface for HTTP
jefe Manages installation, updating, downloading, launching, error reporting, and more for your application.
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.
RosHTTP Unified Scala.js + Scala HTTP client API
scalaj-http Simple scala wrapper for HttpURLConnection. OAuth included.
scalaxb scalaxb is an XML data binding tool for Scala.
spray A suite of scala libraries for building and consuming RESTful web services on top of Akka: lightweight, asynchronous, non-blocking, actor-based, testable
sttp The Scala HTTP client you always wanted!
tubesocks A comfortable and fashionable way to have bi-directional conversations with modern web servers.
Scala libraries for interactions with the Web of Data, and other RDF tools.
Name
Description
GitHub Activity
banana-rdf Banana RDF
rdfp RDF stream processing framework in Scala
scowl A Scala DSL for programming with the OWL API.
Scala libraries for gathering metrics and monitoring applications.
Name
Description
GitHub Activity
kamon-scala Kamon Scala Integration
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
scallion LL(1) parser combinators in Scala
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-apidoc A port of apidocjs https://apidocjs.com to sbt, to document REST Api
sbt-assembly Deploy fat 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 Travis CI
sbt-classfinder SBT plugin for retrieving runtime information about the classes and traits in a project
sbt-dependency-check SBT Plugin for OWASP DependencyCheck. Monitor your dependencies and report if there are any publicly known vulnerabilities (e.g. CVEs). 🌈
sbt-dependency-graph sbt plugin to create a dependency graph for your project
sbt-docker Create Docker images directly from sbt
sbt-doctest Doctest for scala
ensime-sbt Generates .ensime config files for SBT projects
sbt-ghpages git, site and ghpages support for sbt projects.
sbt-groll sbt plugin to roll the Git history
sbt-haxe None
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-pantarhei sbt plugin building and publishing release notes from github pull requests
sbt-pgp PGP plugin for sbt
sbt-release A release plugin for sbt
sbt-revolver An SBT plugin for dangerously fast development turnaround in Scala
sbt-robovm An sbt plugin for iOS development in Scala
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-sublime An sbt plugin for generating Sublime Text projects with library dependencies sources
sbt-unidoc sbt plugin to create a unified API document across projects
sbt-updates sbt plugin that can check Maven and Ivy repositories for dependency updates
sbt-view SBT Plugin for Viewing ScalaDoc and JavaDoc
sbteclipse Plugin for sbt to create Eclipse project definitions
scala-clippy Good advice for Scala compiler errors
ScalaKata2 Interactive Playground
splain better implicit errors for scala
