GitHub - unfiltered/unfiltered: A toolkit for servicing HTTP requests in Scala

GitHub - squeryl/squeryl: A Scala DSL for talking with databases with minimum verbosity and maximum type safety

GitHub - apache/flink: Apache Flink

GitHub - vert-x3/vertx-lang-scala: Vert.x for Scala

GitHub - mgdigital/Chromaprint.scala: Chromaprint/AcoustID audio fingerprinting for the JVM

GitHub - ThoughtWorksInc/each: A macro library that converts native imperative syntax to scalaz's monadic expressions

GitHub - yakivy/jam: Incredibly simple DI Scala library.

GitHub - pac4j/play-pac4j: Security library for Play framework 2 in Java and Scala: OAuth, CAS, SAML, OpenID Connect, LDAP, JWT...

GitHub - laserdisc-io/mysql-binlog-stream

GitHub - xitrum-framework/scaposer: GNU Gettext .po file loader for Scala

GitHub - outr/lucene4s: Light-weight convenience wrapper around Lucene to simplify complex tasks and add Scala sugar.

GitHub - openmole/openmole: Workflow engine for exploration of simulation models using high throughput computing

GitHub - finagle/finagle-postgres: PostgreSQL protocol support for Finagle

GitHub - guardian/play-googleauth: Simple play module for authenticating against Google

GitHub - blackdoor/jose: Extensible JOSE library for Scala

GitHub - xerial/larray: Large off-heap arrays and mmap files for Scala and Java

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

GitHub - CleverCloud/pulsar4s: Idiomatic, typesafe, and reactive Scala client for Apache Pulsar

GitHub - argonaut-io/argonaut: Purely functional JSON parser and library in scala.

GitHub - gatling/gatling: Modern Load Testing as Code

GitHub - kostaskougios/mapperdao: A Scala ORM library

GitHub - testcontainers/testcontainers-scala: Docker containers for testing in scala

GitHub - gnieh/diffson: A scala diff/patch library for Json

GitHub - agourlay/cornichon: Testing tool in Scala for HTTP JSON API

GitHub - splink/veto: If you don't agree with the data

GitHub - etorreborre/specs2: Software Specifications for Scala

GitHub - couchbase/couchbase-jvm-clients: The Couchbase Monorepo for JVM Clients: Java, Scala, io-core…

GitHub - salat/salat: Salat is a simple serialization library for case classes.

GitHub - ISCPIF/freedsl: Practical effect composition library based on abstract wrapping type and the free monad

GitHub - gonearewe/SevenZ4S: SevenZip library for Scala, easy to use.

GitHub - monix/minitest: The super light testing library for Scala and Scala.js

GitHub - jaliss/securesocial: A module that provides OAuth, OAuth2 and OpenID authentication for Play Framework applications

GitHub - zio/zio-quill: Compile-time Language Integrated Queries for Scala

GitHub - com-lihaoyi/Ammonite: Scala Scripting

GitHub - slick/slick: Slick (Scala Language Integrated Connection Kit) is a modern database query and access library for Scala

GitHub - typelevel/scalacheck: Property-based testing for Scala

GitHub - scanamo/scanamo: Simpler DynamoDB access for Scala

GitHub - outr/scalarelational: Type-Safe framework for defining, modifying, and querying SQL databases

GitHub - scalafx/scalafx: ScalaFX simplifies creation of JavaFX-based user interfaces in Scala

GitHub - lucidsoftware/relate: Performant database access in Scala

GitHub - krzemin/octopus: Scala library for boilerplate-free validation

GitHub - xitrum-framework/scalive: Connect a Scala REPL to running JVM processes without any prior setup

GitHub - zio/zio-redis: A ZIO-based redis client

GitHub - scalatra/scalatra: Tiny Scala high-performance, async web framework, inspired by Sinatra

GitHub - ThoughtWorksInc/Binding.scala: Reactive data-binding for Scala

GitHub - playframework/anorm: The Anorm database library

GitHub - splink/pagelets: A module for the Play Framework to build highly modular applications

GitHub - tumblr/colossus: I/O and Microservice library for Scala

GitHub - ticofab/aws-request-signer: Scala library to sign HTTP requests to AWS services.

GitHub - outr/youi: Next generation user interface and application development in Scala and Scala.js for web, mobile, and desktop.

GitHub - haifengl/smile: Statistical Machine Intelligence & Learning Engine

GitHub - scalameter/scalameter: Microbenchmarking and performance regression testing framework for the JVM platform.

GitHub - scalatest/scalatest: A testing tool for Scala and Java developers

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

GitHub - scalamolecule/molecule: Molecule translates custom Scala code to database queries for multiple databases.

GitHub - input-output-hk/scrypto: Cryptographic primitives for Scala

GitHub - mesosphere/chaos: A lightweight framework for writing REST services in Scala.

GitHub - xitrum-framework/xitrum: Async and clustered Scala web framework and HTTP(S) server

GitHub - levkhomich/akka-tracing: A distributed tracing extension for Akka. Provides integration with Play framework, Spray and Akka HTTP.

GitHub - nafg/reactive: A simple FRP library and a web UI framework built on it

GitHub - japgolly/scalajs-react: Facebook's React on Scala.JS

GitHub - charles-river-analytics/figaro: Figaro Programming Language and Core Libraries

GitHub - vagmcs/Optimus: Optimus is a mathematical programming library for Scala.

GitHub - gzoller/ScalaJack: Fast JSON parser/generator for Scala

GitHub - apache/spark: Apache Spark - A unified analytics engine for large-scale data processing

GitHub - wangzaixiang/scala-sql: scala SQL api

GitHub - scala-jsonapi/scala-jsonapi: Scala support library for integrating the JSON API spec with Spray, Play! or Circe

GitHub - malcolmgreaves/avro-codegen: Scala code generator for Avro schemas.

GitHub - scalapb/ScalaPB: Protocol buffer compiler for Scala.

GitHub - tpolecat/doobie: Functional JDBC layer for Scala.

GitHub - BIDData/BIDMach: CPU and GPU-accelerated Machine Learning Library

GitHub - scala-graph/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.

GitHub - axlelang/axle: Axle Domain Specific Language for Scientific Cloud Computing and Visualization

GitHub - zero-deps/proto: Lightweight and fast serialization library for Scala 2/3 based on Protocol Buffers with macros

GitHub - dickwall/subcut: Scala Uniquely Bound Classes Under Traits

GitHub - zero-deps/kvs: Highly available distributed strong eventual consistent and sequentially consistent storage with feeds, sorting and search

GitHub - fomkin/korolev: Single Page Applications running on the server side.

GitHub - reactors-io/reactors: A foundational framework for distributed programming.

GitHub - to-ithaca/libra: A dimensional analysis library based on dependent types

GitHub - nrinaudo/kantan.csv: CSV handling library for Scala

GitHub - msgpack/msgpack-scala: MessagePack serializer implementation for Scala / msgpack.org[Scala]

GitHub - com-lihaoyi/upickle: uPickle: a simple, fast, dependency-free JSON & Binary (MessagePack) serialization library for Scala

GitHub - scallop/scallop: a simple Scala CLI parsing library

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

GitHub - lastland/scala-forklift: Type-safe data migration tool for Slick, Git and beyond.

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

GitHub - xitrum-framework/scala-xgettext: Scala compiler plugin that acts like GNU xgettext command to extract i18n strings in Scala source code files to Gettext .po file

GitHub - rescala-lang/REScala: REScala - distributed and reactive programming embedded in OO and FP programs.

GitHub - xitrum-framework/sclasner: Scala classpath scanner

GitHub - travisbrown/iteratee: Iteratees for Cats

GitHub - zio/zio-json: Fast, secure JSON library with tight ZIO integration.

GitHub - indix/schemer: Schema registry for CSV, TSV, JSON, AVRO and Parquet schema. Supports schema inference and GraphQL API.

GitHub - t2v/play2-auth: Play2.x Authentication and Authorization module

GitHub - typelevel/jawn: Jawn is for parsing jay-sawn (JSON)

GitHub - EmergentOrder/onnx-scala: An ONNX (Open Neural Network eXchange) API and backend for typeful, functional deep learning and classical machine learning in Scala 3

GitHub - scala-records/scala-records: Labeled records for Scala based on structural refinement types and macros.

GitHub - scalanlp/breeze: Breeze is a numerical processing library for Scala.

GitHub - frugalmechanic/fm-flatfile: Scala Library for Reading Flat File Data (CSV/TSV/XLS/XLSX)

GitHub - annetteplatform/annette: Platform to build distributed, scalable, enterprise-wide business applications

GitHub - twitter/cassovary: Cassovary is a simple big graph processing library for the JVM

GitHub - storm-enroute/reactors: A concurrent reactive programming framework.

GitHub - xitrum-framework/glokka: Library to register and lookup actors by names in an Akka cluster

GitHub - picnicml/doddle-model: :cake: doddle-model: machine learning in Scala.

GitHub - spotify/scio: A Scala API for Apache Beam and Google Cloud Dataflow.

GitHub - scala-hamsters/hamsters: A mini Scala utility library

GitHub - typelevel/spire: Powerful new number types and numeric abstractions for Scala.

GitHub - longevityframework/longevity: A Persistence Framework for Scala and NoSQL

GitHub - dvarelap/peregrine: Async lightweight Scala web framework

GitHub - tototoshi/scala-csv: CSV Reader/Writer for Scala

GitHub - twitter/scrooge: A Thrift parser/generator

GitHub - SciScala/NDScala: 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

GitHub - chronoscala/chronoscala: A JSR-310 port of nscala_time

GitHub - scaldi/scaldi: Lightweight Scala Dependency Injection Library

GitHub - twitter/finagle: A fault tolerant, protocol-agnostic RPC system

GitHub - openmole/gridscale: Scala library for accessing various file, batch systems, job schedulers and grid middlewares.

GitHub - sksamuel/scrimage: JVM - Java, Kotlin, Scala image processing library

GitHub - mrdimosthenis/Synapses: A group of neural-network libraries for functional and mainstream languages

GitHub - akka/alpakka-kafka: Alpakka Kafka connector - Alpakka is a Reactive Enterprise Integration library for Java and Scala, based on Reactive Streams and Akka.

GitHub - 7mind/izumi: Productivity-oriented collection of lightweight fancy stuff for Scala toolchain

GitHub - Stratio/sparta: Real Time Analytics and Data Pipelines based on Spark Streaming

GitHub - Clustering4Ever/Clustering4Ever: C4E, a JVM friendly library written in Scala for both local and distributed (Spark) Clustering.

GitHub - codingwell/scala-guice: Scala extensions for Google Guice

GitHub - openmole/mgo: Purely functional genetic algorithms for multi-objective optimisation

GitHub - bkirwi/decline: A composable command-line parser for Scala.

GitHub - fomkin/pushka: ABANDONED Pure Scala serialization library with annotations

GitHub - softwaremill/quicklens: Modify deeply nested case class fields

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

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

GitHub - monix/monix: Asynchronous, Reactive Programming for Scala and Scala.js.

GitHub - Thangiee/Freasy-Monad: Easy way to create Free Monad using Scala macros with first-class Intellij support.

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

GitHub - vegas-viz/Vegas: The missing MatPlotLib for Scala + Spark

GitHub - twitter/chill: Scala extensions for the Kryo serialization library

GitHub - yakivy/poppet: Minimal, type-safe RPC Scala library.

GitHub - lagom/lagom: Reactive Microservices for the JVM

GitHub - spring-attic/reactor-scala-extensions: A scala extension for Project Reactor's Flux and Mono

GitHub - scalameta/munit: Scala testing library with actionable errors and extensible APIs

GitHub - jcazevedo/moultingyaml: Scala wrapper for SnakeYAML

GitHub - Primetalk/SynapseGrid: SynapseGrid is a framework for constructing dynamic low latency data flow systems.

GitHub - stephenmcd/curiodb: Distributed NoSQL Database

GitHub - twitter/algebird: Abstract Algebra for Scala

GitHub - indix/sparkplug: Spark package to "plug" holes in data using SQL based rules ⚡️ 🔌

GitHub - com-lihaoyi/utest: A simple testing framework for Scala

GitHub - unibas-gravis/scalismo: Scalable Image Analysis and Shape Modelling

GitHub - apache/zeppelin: Web-based notebook that enables data-driven, interactive data analytics and collaborative documents with SQL, Scala and more.

GitHub - stryker-mutator/stryker4s: Mutation testing for Scala

GitHub - twitter/summingbird: Streaming MapReduce with Scalding and Storm

GitHub - ThoughtWorksInc/enableIf.scala: A library that toggles Scala code at compile-time, like #if in C/C++

GitHub - mongodb/casbah: Casbah is now officially end-of-life (EOL).

GitHub - akka/akka: Build highly concurrent, distributed, and resilient message-driven applications on the JVM

GitHub - ThoughtWorksInc/Dsl.scala: A framework to create embedded Domain-Specific Languages in Scala

GitHub - scalalandio/chimney: Scala library for boilerplate-free, type-safe data transformations

GitHub - spark-notebook/spark-notebook: Interactive and Reactive Data Science using Scala and Spark.

GitHub - eaplatanios/tensorflow_scala: TensorFlow API for the Scala Programming Language

GitHub - botkop/numsca: numsca is numpy for scala

GitHub - frees-io/freestyle: A cohesive & pragmatic framework of FP centric Scala libraries

Build software better, together

GitHub - spray/spray-json: A lightweight, clean and simple JSON implementation in Scala

GitHub - nscala-time/nscala-time: A new Scala wrapper for Joda Time based on scala-time

GitHub - lightbend-labs/scala-logging: Convenient and performant logging library for Scala wrapping SLF4J.

GitHub - tersesystems/blindsight: Blindsight is a Scala logging API with DSL based structured logging, fluent logging, semantic logging, flow logging, and context aware logging.

GitHub - backuity/clist: Command Line Interface Scala Toolkit

GitHub - scopt/scopt: command line options parsing for Scala

GitHub - outworkers/phantom: Schema safe, type-safe, reactive Scala driver for Cassandra/Datastax Enterprise

GitHub - twitter/scalding: A Scala API for Cascading

GitHub - outr/scribe: The fastest logging library in the world. Built from scratch in Scala and programmatically configurable.

GitHub - JohnSnowLabs/spark-nlp: State of the Art Natural Language Processing

GitHub - wvlet/airframe: Essential Building Blocks for Scala

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

GitHub - typelevel/cats: Lightweight, modular, and extensible library for functional programming.

GitHub - jap-company/fields: Scala validation library

GitHub - com-lihaoyi/cask: Cask: a Scala HTTP micro-framework

GitHub - tminglei/slick-pg: Slick extensions for PostgreSQL

GitHub - typelevel/simulacrum: First class syntax support for type classes in Scala

GitHub - nestorpersist/json: Persist-Json, a Fast Json Parser Written in Scala

GitHub - fthomas/refined: Refinement types for Scala

GitHub - milessabin/shapeless: Generic programming for Scala

GitHub - lift/framework: Lift Framework

GitHub - twitter/finatra: Fast, testable, Scala services built on TwitterServer and Finagle

Build software better, together

GitHub - SpinGo/op-rabbit: The Opinionated RabbitMQ Library for Scala and Akka

GitHub - nrktkt/ninny-json: JSON typeclasses that know the difference between null and absent fields

GitHub - plokhotnyuk/jsoniter-scala: Scala macros for compile-time generation of safe and ultra-fast JSON codecs + circe booster

GitHub - anskarl/LoMRF: LoMRF is an open-source implementation of Markov Logic Networks

GitHub - scalaprops/scalaprops: property based testing library for Scala

GitHub - circe/circe: Yet another JSON library for Scala

GitHub - paulbutcher/ScalaMock: Native Scala mocking framework

GitHub - nulab/scala-oauth2-provider: OAuth 2.0 server-side implementation written in Scala

GitHub - com-lihaoyi/mainargs: A small, convenient, dependency-free library for command-line argument parsing in Scala

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

GitHub - innFactory/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.

GitHub - apache/kafka: Mirror of Apache Kafka

GitHub - ReactiveMongo/ReactiveMongo: :leaves: Non-blocking, Reactive MongoDB Driver for Scala

GitHub - sangria-graphql/sangria: Scala GraphQL implementation

GitHub - fingo/spata: Functional, stream-based CSV processor for Scala

GitHub - aselab/scala-activerecord: ActiveRecord-like ORM library for Scala

GitHub - laserdisc-io/laserdisc: A Future-free Fs2 native pure FP Redis client

GitHub - UdashFramework/udash-core: Scala framework for building beautiful and maintainable web applications.

GitHub - FasterXML/jackson: Main Portal page for the Jackson project

GitHub - scalameta/scalameta: Library to read, analyze, transform and generate Scala programs

GitHub - typelevel/fs2: Compositional, streaming I/O library for Scala

GitHub - playframework/playframework: The Community Maintained High Velocity Web Framework For Java and Scala.

GitHub - neotypes/neotypes: Scala lightweight, type-safe, asynchronous driver for neo4j

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

GitHub - json4s/json4s: JSON library

GitHub - softwaremill/akka-http-session: Web & mobile client-side akka-http sessions, with optional JWT support

GitHub - softwaremill/macwire: Lightweight and Nonintrusive Scala Dependency Injection Library

GitHub - PoslavskySV/rings: Rings: efficient JVM library for polynomial rings

GitHub - ciren/cilib: Typesafe, purely functional Computational Intelligence

GitHub - lihaoyi/scala.rx: An experimental library for Functional Reactive Programming in Scala

GitHub - ReactiveCouchbase/reactivecouchbase-rs-core: New ReactiveCouchbase driver using reactive-streams

GitHub - pathikrit/better-files: Simple, safe and intuitive Scala I/O

GitHub - outworkers/morpheus: Reactive type-safe Scala driver for SQL databases

GitHub - maxcellent/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.

GitHub - analogweb/analogweb-scala: Tiny High Performance HTTP Server for Scala

GitHub - disneystreaming/weaver-test: A test framework that runs everything in parallel.

GitHub - crobox/clickhouse-scala-client: Clickhouse Scala Client with Reactive Streams support

GitHub - monix/shade: Memcached client for Scala

GitHub - galliaproject/gallia-core: A schema-aware Scala library for data transformation

GitHub - sirthias/borer: Efficient CBOR and JSON (de)serialization in Scala

GitHub - beloglazov/couchdb-scala: A purely functional Scala client for CouchDB

GitHub - playframework/play-json: The Play JSON library

GitHub - poslegm/scala-phash: Image comparison by hash codes

GitHub - sksamuel/avro4s: Avro schema generation and serialization / deserialization for Scala

GitHub - scodec/scodec: Scala combinator library for working with binary data

GitHub - yakivy/dupin: Minimal, idiomatic, customizable validation Scala library.

GitHub - zalando-stups/OAuth2-mock-play: An implementation of an OAuth2 server designed for mocking/testing

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

GitHub - optics-dev/Monocle: Optics library for Scala

GitHub - mingchuno/etcd4s: Scala etcd client implementing V3 APIs

GitHub - scala/scala-async: An asynchronous programming facility for Scala

GitHub - wix-incubator/accord: Accord: A sane validation library for Scala

GitHub - typelevel/skunk: A data access library for Scala + Postgres.

GitHub - tinylog-org/tinylog: tinylog is a lightweight logging framework for Java, Kotlin, Scala, and Android

GitHub - parapet-io/parapet: A purely functional library to build distributed and event-driven systems

GitHub - etaty/rediscala: Non-blocking, Reactive Redis driver for Scala (with Sentinel support)

GitHub - twitter/util: Wonderful reusable code from Twitter

GitHub - typelevel/squants: The Scala API for Quantities, Units of Measure and Dimensional Analysis

GitHub - epfldata/squid: Squid – type-safe metaprogramming and compilation framework for Scala

GitHub - scalaz/scalaz: Principled Functional Programming in Scala

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

GitHub - intel-analytics/ipex-llm: 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.

GitHub - mockito/mockito-scala: Mockito for Scala language

GitHub - Log4s/log4s: High-performance SLF4J wrapper for Scala.

GitHub - Philippus/elastic4s: 🔍 Elasticsearch Scala Client - Reactive, Non Blocking, Type Safe, HTTP Client

aossie / Agora · GitLab

aossie / Scavenger · GitLab

GitHub - JetBrains/sbt-ide-settings: SBT plugin for tweaking various IDE settings

GitHub - criteo/lolhttp: An HTTP Server and Client library for Scala.

Scalafmt · Code formatter for Scala

GitHub - rtimush/sbt-updates: sbt plugin that can check Maven and Ivy repositories for dependency updates

GitHub - outr/media4s: Scala command-line wrapper around ffmpeg, ffprobe, ImageMagick, and other tools relating to media.

GitHub - tpolecat/atto: friendly little parsers

GitHub - scala/scala-parser-combinators: simple combinator-based parsing for Scala. formerly part of the Scala standard library, now a separate community-maintained module