A toolkit for servicing HTTP requests in Scala

A Scala DSL for talking with databases with minimum verbosity and maximum type safety

Apache Flink

Vert.x for Scala

Chromaprint/AcoustID audio fingerprinting for the JVM

A macro library that converts native imperative syntax to scalaz's monadic expressions

Incredibly simple DI Scala library.

Security library for Play framework 2 in Java and Scala: OAuth, CAS, SAML, OpenID Connect, LDAP, JWT...

laserdisc-io/mysql-binlog-stream

GNU Gettext .po file loader for Scala

Light-weight convenience wrapper around Lucene to simplify complex tasks and add Scala sugar.

Workflow engine for exploration of simulation models using high throughput computing

PostgreSQL protocol support for Finagle

Simple play module for authenticating against Google

Extensible JOSE library for Scala

Large off-heap arrays and mmap files for Scala and Java

A scala library for connecting to a redis server, or a cluster of redis nodes using consistent hashing on the client side.

Idiomatic, typesafe, and reactive Scala client for Apache Pulsar

Purely functional JSON parser and library in scala.

Modern Load Testing as Code

A Scala ORM library

Docker containers for testing in scala

A scala diff/patch library for Json

Testing tool in Scala for HTTP JSON API

If you don't agree with the data

Software Specifications for Scala

The Couchbase Monorepo for JVM Clients: Java, Scala, io-core…

Salat is a simple serialization library for case classes.

Practical effect composition library based on abstract wrapping type and the free monad

SevenZip library for Scala, easy to use.

The super light testing library for Scala and Scala.js

A module that provides OAuth, OAuth2 and OpenID authentication for Play Framework applications

Compile-time Language Integrated Queries for Scala

Scala Scripting

Slick (Scala Language Integrated Connection Kit) is a modern database query and access library for Scala

Property-based testing for Scala

Simpler DynamoDB access for Scala

Type-Safe framework for defining, modifying, and querying SQL databases

ScalaFX simplifies creation of JavaFX-based user interfaces in Scala

Performant database access in Scala

Scala library for boilerplate-free validation

Connect a Scala REPL to running JVM processes without any prior setup

A ZIO-based redis client

Tiny Scala high-performance, async web framework, inspired by Sinatra

Reactive data-binding for Scala

The Anorm database library

A module for the Play Framework to build highly modular applications

I/O and Microservice library for Scala

Scala library to sign HTTP requests to AWS services.

Next generation user interface and application development in Scala and Scala.js for web, mobile, and desktop.

Statistical Machine Intelligence & Learning Engine

Microbenchmarking and performance regression testing framework for the JVM platform.

A testing tool for Scala and Java developers

:monorail: "Scala on Rails" - A full-stack web app framework for rapid development in Scala

Molecule translates custom Scala code to database queries for multiple databases.

Cryptographic primitives for Scala

A lightweight framework for writing REST services in Scala.

Async and clustered Scala web framework and HTTP(S) server

A distributed tracing extension for Akka. Provides integration with Play framework, Spray and Akka HTTP.

A simple FRP library and a web UI framework built on it

Facebook's React on Scala.JS

Figaro Programming Language and Core Libraries

Optimus is a mathematical programming library for Scala.

Fast JSON parser/generator for Scala

Apache Spark - A unified analytics engine for large-scale data processing

scala SQL api

Scala support library for integrating the JSON API spec with Spray, Play! or Circe

Scala code generator for Avro schemas.

Protocol buffer compiler for Scala.

Functional JDBC layer for Scala.

CPU and GPU-accelerated Machine Learning Library

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.

Axle Domain Specific Language for Scientific Cloud Computing and Visualization

Lightweight and fast serialization library for Scala 2/3 based on Protocol Buffers with macros

Scala Uniquely Bound Classes Under Traits

Highly available distributed strong eventual consistent and sequentially consistent storage with feeds, sorting and search

Single Page Applications running on the server side.

A foundational framework for distributed programming.

A dimensional analysis library based on dependent types

CSV handling library for Scala

MessagePack serializer implementation for Scala / msgpack.org[Scala]

uPickle: a simple, fast, dependency-free JSON & Binary (MessagePack) serialization library for Scala

a simple Scala CLI parsing library

Add-on module for Jackson (https://github.com/FasterXML/jackson) to support Scala-specific datatypes

Type-safe data migration tool for Slick, Git and beyond.

A tidy SQL-based DB access library for Scala developers. This library naturally wraps JDBC APIs and provides you easy-to-use APIs.

Scala compiler plugin that acts like GNU xgettext command to extract i18n strings in Scala source code files to Gettext .po file

REScala - distributed and reactive programming embedded in OO and FP programs.

Scala classpath scanner

Iteratees for Cats

Fast, secure JSON library with tight ZIO integration.

Schema registry for CSV, TSV, JSON, AVRO and Parquet schema. Supports schema inference and GraphQL API.

Play2.x Authentication and Authorization module

Jawn is for parsing jay-sawn (JSON)

An ONNX (Open Neural Network eXchange) API and backend for typeful, functional deep learning and classical machine learning in Scala 3

Labeled records for Scala based on structural refinement types and macros.

Breeze is a numerical processing library for Scala.

Scala Library for Reading Flat File Data (CSV/TSV/XLS/XLSX)

Platform to build distributed, scalable, enterprise-wide business applications

Cassovary is a simple big graph processing library for the JVM

A concurrent reactive programming framework.

Library to register and lookup actors by names in an Akka cluster

:cake: doddle-model: machine learning in Scala.

A Scala API for Apache Beam and Google Cloud Dataflow.

A mini Scala utility library

Powerful new number types and numeric abstractions for Scala.

A Persistence Framework for Scala and NoSQL

Async lightweight Scala web framework

CSV Reader/Writer for Scala

A Thrift parser/generator

N-dimensional / multi-dimensional arrays (tensors) in Scala 3. Think NumPy ndarray / PyTorch Tensor but type-safe over shapes, array/axis labels & numeric data types

A JSR-310 port of nscala_time

Lightweight Scala Dependency Injection Library

A fault tolerant, protocol-agnostic RPC system

Scala library for accessing various file, batch systems, job schedulers and grid middlewares.

JVM - Java, Kotlin, Scala image processing library

A group of neural-network libraries for functional and mainstream languages

Alpakka Kafka connector - Alpakka is a Reactive Enterprise Integration library for Java and Scala, based on Reactive Streams and Akka.

Productivity-oriented collection of lightweight fancy stuff for Scala toolchain

Real Time Analytics and Data Pipelines based on Spark Streaming

C4E, a JVM friendly library written in Scala for both local and distributed (Spark) Clustering.

Scala extensions for Google Guice

Purely functional genetic algorithms for multi-objective optimisation

A composable command-line parser for Scala.

ABANDONED Pure Scala serialization library with annotations

Modify deeply nested case class fields

Non-blocking, ultra-fast Scala Redis client built on top of Akka IO, used in production at Livestream

RxScala – Reactive Extensions for Scala – a library for composing asynchronous and event-based programs using observable sequences

Asynchronous, Reactive Programming for Scala and Scala.js.

Easy way to create Free Monad using Scala macros with first-class Intellij support.

Eff monad for cats - https://atnos-org.github.io/eff

The missing MatPlotLib for Scala + Spark

Scala extensions for the Kryo serialization library

Minimal, type-safe RPC Scala library.

Reactive Microservices for the JVM

A scala extension for Project Reactor's Flux and Mono

Scala testing library with actionable errors and extensible APIs

Scala wrapper for SnakeYAML

SynapseGrid is a framework for constructing dynamic low latency data flow systems.

Distributed NoSQL Database

Abstract Algebra for Scala

Spark package to "plug" holes in data using SQL based rules ⚡️ 🔌

A simple testing framework for Scala

Scalable Image Analysis and Shape Modelling

Web-based notebook that enables data-driven, interactive data analytics and collaborative documents with SQL, Scala and more.

Mutation testing for Scala

Streaming MapReduce with Scalding and Storm

A library that toggles Scala code at compile-time, like #if in C/C++

Casbah is now officially end-of-life (EOL).

Build highly concurrent, distributed, and resilient message-driven applications on the JVM

A framework to create embedded Domain-Specific Languages in Scala

Scala library for boilerplate-free, type-safe data transformations

Interactive and Reactive Data Science using Scala and Spark.

TensorFlow API for the Scala Programming Language

numsca is numpy for scala

A cohesive & pragmatic framework of FP centric Scala libraries

Build software better, together

A lightweight, clean and simple JSON implementation in Scala

A new Scala wrapper for Joda Time based on scala-time

Convenient and performant logging library for Scala wrapping SLF4J.

Blindsight is a Scala logging API with DSL based structured logging, fluent logging, semantic logging, flow logging, and context aware logging.

Command Line Interface Scala Toolkit

command line options parsing for Scala

Schema safe, type-safe, reactive Scala driver for Cassandra/Datastax Enterprise

A Scala API for Cascading

The fastest logging library in the world. Built from scratch in Scala and programmatically configurable.

State of the Art Natural Language Processing

Essential Building Blocks for Scala

ZIO — A type-safe, composable library for async and concurrent programming in Scala

Lightweight, modular, and extensible library for functional programming.

Scala validation library

Cask: a Scala HTTP micro-framework

Slick extensions for PostgreSQL

First class syntax support for type classes in Scala

Persist-Json, a Fast Json Parser Written in Scala

Refinement types for Scala

Generic programming for Scala

Lift Framework

Fast, testable, Scala services built on TwitterServer and Finagle

Build software better, together

The Opinionated RabbitMQ Library for Scala and Akka

JSON typeclasses that know the difference between null and absent fields

Scala macros for compile-time generation of safe and ultra-fast JSON codecs + circe booster

LoMRF is an open-source implementation of Markov Logic Networks

property based testing library for Scala

Yet another JSON library for Scala

Native Scala mocking framework

OAuth 2.0 server-side implementation written in Scala

A small, convenient, dependency-free library for command-line argument parsing in Scala

Scala + Druid: Scruid. A library that allows you to compose queries in Scala, and parse the result back into typesafe classes.

akka-persistence-gcp-datastore is a journal and snapshot store plugin for akka-persistence using google cloud firestore in datastore mode.

Mirror of Apache Kafka

:leaves: Non-blocking, Reactive MongoDB Driver for Scala

Scala GraphQL implementation

Functional, stream-based CSV processor for Scala

ActiveRecord-like ORM library for Scala

A Future-free Fs2 native pure FP Redis client

Scala framework for building beautiful and maintainable web applications.

Main Portal page for the Jackson project

Library to read, analyze, transform and generate Scala programs

Compositional, streaming I/O library for Scala

The Community Maintained High Velocity Web Framework For Java and Scala.

Scala lightweight, type-safe, asynchronous driver for neo4j

Type-safe general-cryptography library - https://jmcardon.github.io/tsec/

JSON library

Web & mobile client-side akka-http sessions, with optional JWT support

Lightweight and Nonintrusive Scala Dependency Injection Library

Rings: efficient JVM library for polynomial rings

Typesafe, purely functional Computational Intelligence

An experimental library for Functional Reactive Programming in Scala

New ReactiveCouchbase driver using reactive-streams

Simple, safe and intuitive Scala I/O

Reactive type-safe Scala driver for SQL databases

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.

Tiny High Performance HTTP Server for Scala

A test framework that runs everything in parallel.

Clickhouse Scala Client with Reactive Streams support

Memcached client for Scala

A schema-aware Scala library for data transformation

Efficient CBOR and JSON (de)serialization in Scala

A purely functional Scala client for CouchDB

The Play JSON library

Image comparison by hash codes

Avro schema generation and serialization / deserialization for Scala

Scala combinator library for working with binary data

Minimal, idiomatic, customizable validation Scala library.

An implementation of an OAuth2 server designed for mocking/testing

A type-safe, reflection-free, powerful enumeration implementation for Scala with exhaustive pattern match warnings and helpful integrations.

Optics library for Scala

Scala etcd client implementing V3 APIs

An asynchronous programming facility for Scala

Accord: A sane validation library for Scala

A data access library for Scala + Postgres.

tinylog is a lightweight logging framework for Java, Kotlin, Scala, and Android

A purely functional library to build distributed and event-driven systems

Non-blocking, Reactive Redis driver for Scala (with Sentinel support)

Wonderful reusable code from Twitter

The Scala API for Quantities, Units of Measure and Dimensional Analysis

Squid – type-safe metaprogramming and compilation framework for Scala

Principled Functional Programming in Scala

sbt plugin that generates Scala case classes for easy, statically typed and implicit access of JSON data e.g. from API responses

Accelerate local LLM inference and finetuning (LLaMA, Mistral, ChatGLM, Qwen, Baichuan, Mixtral, Gemma, Phi, MiniCPM, etc.) on Intel CPU and GPU (e.g., local PC with iGPU, discrete GPU such as Arc, Flex and Max); seamlessly integrate with llama.cpp, Ollama, HuggingFace, LangChain, LlamaIndex, GraphRAG, DeepSpeed, vLLM, FastChat, Axolotl, etc.

Mockito for Scala language

High-performance SLF4J wrapper for Scala.

🔍 Elasticsearch Scala Client - Reactive, Non Blocking, Type Safe, HTTP Client

aossie / Agora · GitLab

aossie / Scavenger · GitLab

SBT plugin for tweaking various IDE settings

An HTTP Server and Client library for Scala.

Scalafmt · Code formatter for Scala

sbt plugin that can check Maven and Ivy repositories for dependency updates

Scala command-line wrapper around ffmpeg, ffprobe, ImageMagick, and other tools relating to media.

friendly little parsers

simple combinator-based parsing for Scala. formerly part of the Scala standard library, now a separate community-maintained module