lichess-org / lila

Open source server powering lichess.org, a free, ad-free online chess platform with realtime games, analysis, and tournaments.

ShiftLeftSecurity / codepropertygraph

Specification and Scala tooling for the Code Property Graph, a language-agnostic representation of program code for analysis.

joernio / joern

Open-source platform that builds code property graphs from source, bytecode, and binaries for querying vulnerabilities with a Scala DSL.

delta-io / delta

An open-source storage framework for building Lakehouse architectures with ACID tables accessible from Spark, Flink, Trino, Presto, and Hive.

THU-DSP-LAB / ventus-gpgpu

GPGPU processor supporting RISCV-V extension, developed with Chisel HDL

apache / datafusion-comet

Apache DataFusion Comet is a plugin that accelerates Apache Spark queries by running operators and expressions natively on Arrow columnar data.

apache / gluten

Middleware plugin that offloads Spark SQL physical plan execution to native engines like Velox and ClickHouse.

gitbucket / gitbucket

Self-hosted Git web platform written in Scala, offering repository hosting, issues, pull requests, and wiki.

scala / scala3

The Scala 3 compiler, standard library, and language specification, also known as Dotty.

zio / zio

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

TheHive-Project / Cortex

Cortex: a Powerful Observable Analysis and Active Response Engine

scapegoat-scala / scapegoat

Scala compiler plugin for static code analysis

twitter / the-algorithm

Source code for the X Recommendation Algorithm

gatling / gatling

Open-source load testing tool where performance test scenarios are written as code in Java, JavaScript, TypeScript, Kotlin, or Scala.

apache / openwhisk

Apache OpenWhisk is an open source serverless cloud platform

Netflix / atlas

In-memory dimensional time series database.

typelevel / doobie

Functional JDBC layer for Scala.

sangria-graphql / sangria

Scala GraphQL implementation

japgolly / scalajs-react

Facebook's React on Scala.JS

apache / carbondata

High performance data store solution

broadinstitute / cromwell

Scientific workflow engine designed for simplicity & scalability. Trivially transition between one off use cases to massive scale production environments

firesim / firesim

FireSim: Fast and Effortless FPGA-accelerated Hardware Simulation with On-Prem and Cloud Flexibility

dbpedia / extraction-framework

The software used to extract structured data from Wikipedia

scalacenter / bloop

Bloop is a build server and CLI tool to compile, test and run Scala fast from any editor or build tool.

softwaremill / quicklens

Modify deeply nested case class fields

raquo / Laminar

Simple, expressive, and safe UI library for Scala.js

plokhotnyuk / jsoniter-scala

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

Normation / rudder

Rudder is a configuration and security automation platform. Manage your Cloud, hybrid or on-premises infrastructure in a simple, scalable and dynamic way.

Yubico / java-webauthn-server

Server-side Web Authentication library for Java https://www.w3.org/TR/webauthn/#rp-operations

Iltotore / iron

Strong type constraints for Scala

snowplow / snowplow

The leader in Customer Data Infrastructure

typelevel / cats

Lightweight, modular, and extensible library for functional programming.

scalaz / scalaz

Principled Functional Programming in Scala

JohnSnowLabs / spark-nlp

State of the Art Natural Language Processing

milessabin / shapeless

Generic programming for Scala

spotify / scio

A Scala API for Apache Beam and Google Cloud Dataflow.

http4s / http4s

A minimal, idiomatic Scala interface for HTTP

circe / circe

Yet another JSON library for Scala

metarank / metarank

A low code Machine Learning personalized ranking service for articles, listings, search results, recommendations that boosts user engagement. A friendly Learn-to-Rank engine

typelevel / fs2

Compositional, streaming I/O library for Scala

scalameta / metals

Language Server Protocol implementation providing IDE features like completion, navigation, and diagnostics for Scala.

zio / zio-quill

Compile-time Language Integrated Queries for Scala

monix / monix

Asynchronous, Reactive Programming for Scala and Scala.js.

OpenBankProject / OBP-API

An open source RESTful API platform for banks that supports Open Banking, XS2A, PSD2 and Open Finance through access to accounts, transactions, counterparties, payments, entitlements and metadata - plus a host of internal banking and management APIs.

optics-dev / Monocle

Optics library for Scala

typelevel / skunk

A data access library for Scala + Postgres.

apache / pekko

Build highly concurrent, distributed, and resilient message-driven applications using Java/Scala

combust / mleap

MLeap: Deploy ML Pipelines to Production

pureconfig / pureconfig

A boilerplate-free library for loading configuration files

locationtech / geomesa

GeoMesa is a suite of tools for working with big geo-spatial data in a distributed fashion.

softwaremill / tapir

Rapid development of self-documenting APIs

guardian / grid

The Guardian’s image management system

akka / alpakka-kafka

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

locationtech / geotrellis

GeoTrellis is a geographic data processing engine for high performance applications.

ACINQ / eclair

A scala implementation of the Lightning Network.

softwaremill / macwire

Zero-cost, compile-time, type-safe dependency injection library.

akka / alpakka

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

scalalandio / chimney

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

lensesio / stream-reactor

A collection of Kafka Connect sinks and sources maintained by Lenses.io.

airbnb / chronon

Chronon is a data platform for serving for AI/ML applications.