1.apache / spark
Apache Spark - A unified analytics engine for large-scale data processing
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100 repositories by Attention Score · Aug 5, 2026 – Nov 2, 2026 (UTC)
Apache Spark - A unified analytics engine for large-scale data processing
Source code for the X Recommendation Algorithm
♞ lichess.org: the forever free, adless and open source chess server ♞
An open-source storage framework that enables building a Lakehouse architecture with compute engines including Spark, PrestoDB, Flink, Trino, and Hive and APIs
Removes large or troublesome blobs like git-filter-branch does, but faster. And written in Scala
A Git platform powered by Scala with easy installation, high extensibility & GitHub API compatibility
In-memory message queue with an Amazon SQS-compatible interface. Runs stand-alone or embedded.
Build highly concurrent, distributed, and resilient message-driven applications using Java/Scala
Scala 2 compiler and standard library. Scala 2 bugs at https://github.com/scala/bug; Scala 3 at https://github.com/scala/scala3
A better build tool for Java, Scala and Kotlin: Simpler than Maven, easier than Gradle, with 3-7x faster dev workflows than other JVM build tools
Modern Load Testing as Code
Lightweight, modular, and extensible library for functional programming.
Simple and Distributed Machine Learning Python Library porting ML algorithms for Spark
The leader in Customer Data Infrastructure
Apache Kyuubi is a distributed and multi-tenant gateway to provide serverless SQL on data warehouses and lakehouses.
A platform to build and run apps that are elastic, agile, and resilient. SDK, libraries, and hosted environments.
Deequ is a library built on top of Apache Spark for defining "unit tests for data", which measure data quality in large datasets.
Arnold Schwarzenegger based programming language
Apache OpenWhisk is an open source serverless cloud platform
The Community Maintained High Velocity Web Framework For Java and Scala.
GraphFrames is a package for Apache Spark which provides DataFrame-based Graphs
PredictionIO, a machine learning server for developers and ML engineers.
💾 Database Tools incl. ORM, Migrations and Admin UI (Postgres, MySQL & MongoDB) [deprecated]
State of the Art Natural Language Processing
CMAK is a tool for managing Apache Kafka clusters
Compositional, streaming I/O library for Scala
Scientific workflow engine designed for simplicity & scalability. Trivially transition between one off use cases to massive scale production environments
Apache Spark to Apache Cassandra connector
MLeap: Deploy ML Pipelines to Production
The Scala HTTP client you always wanted!
Low-code tool for automating actions on real time data | Stream processing for the users.
List editor for power users, backed by a self-hosted server
Asynchronous, Reactive Programming for Scala and Scala.js.
Scala library for boilerplate-free, type-safe data transformations
ADAM is a genomics analysis platform with specialized file formats built using Apache Avro, Apache Spark, and Apache Parquet. Apache 2 licensed.
Apache Livy is an open source REST interface for interacting with Apache Spark from anywhere.
Event data simulator. Generates a stream of pseudo-random events from a set of users, designed to simulate web traffic.
Principled Functional Programming in Scala
A data access library for Scala + Postgres.
Bloop is a build server and CLI tool to compile, test and run Scala fast from any editor or build tool.
A distributed Spark/Scala implementation of the isolation forest and extended isolation forest algorithms for unsupervised outlier detection, featuring support for scalable training and ONNX export for easy cross-platform inference.
A testing tool for Scala and Java developers
Generic programming for Scala
Scala GraphQL implementation
Sparkling Water provides H2O functionality inside Spark cluster
recursion schemes for cats; to iterate is human, to recurse, divine
Gatling plugin for Apache Kafka — produce, request-reply, and consume load testing with Avro, Protobuf, and Schema Registry support
Code to accompany Advanced Analytics with Spark from O'Reilly Media
Distributed Prometheus time series database
uPickle: a simple, fast, dependency-free JSON & Binary (MessagePack) serialization library for Scala
An Apache Spark framework for easy data processing, extraction as well as derivation for web archives and archival collections, developed at Internet Archive.
The Archives Unleashed Toolkit is an open-source toolkit for analyzing web archives.
A Typesafe-logging (and slf4j) compatible logging library based on macros for Scala/JVM, Scala.js, and Scala Native
Scala Native BLAS (Basic Linear Algebra Subprograms) supporting Linux and macOS
Gatling DSL extensions — feeders, profile management, transactions, assertions, Redis integration, and utility functions
Gatling plugin for JDBC — SQL queries, batch operations, and stored procedures with HikariCP connection pooling
REST job server for Apache Spark
Base classes to use when writing tests with Spark
⛓️ Reference Waves Blockchain Node (client) implementation on Scala
Functional GraphQL library for Scala
The Scala API for Quantities, Units of Measure and Dimensional Analysis
Scala macros for compile-time generation of safe and ultra-fast JSON codecs + circe booster
ScalaTags is a small XML/HTML construction library for Scala.
DBpedia Spotlight is a tool for automatically annotating mentions of DBpedia resources in text.
Lightweight real-time big data streaming engine over Apache Pekko
Software Specifications for Scala
Native Docker UI implemented using Scala.js and React - DEPRECATED
The fastest logging library in the world. Built from scratch in Scala and programmatically configurable.
Purely functional JSON parser and library in scala.
Scala library providing "source" metadata to your program, similar to Python's __name__, C++'s __LINE__ or Ruby's __FILE__.
Scala testing library with actionable errors and extensible APIs
Storehaus is a library that makes it easy to work with asynchronous key value stores
Neo4j Connector for Apache Spark, which provides bi-directional read/write access to Neo4j from Spark, using the Spark DataSource APIs
property based testing library for Scala
Scala/Scala.js library for manipulating Fancy Ansi colored strings
A small, convenient, dependency-free library for command-line argument parsing in Scala
Scala Native HTTP server based on FreeUnit
Scala configuration library supporting HOCON for Scala, Java, Scala.js, and Scala Native
The first and only true Functional Reactive Programming framework for Scala.
Scala Native GUI framework
A Bitcoin Script Interpreter and Debugger in Scala
TOML parser with codec derivation for the Scala platform
Scala Native bindings for the GNU Ncurses C library