82 repositories
| # ↓ | Repository | Stars | Forks | Description | Last push |
|---|---|---|---|---|---|
| 1↓2 | twitter/the-algorithm | 73,951 | 13,280 | Source code for the X Recommendation Algorithm | 2025-09-08 |
| 2↓5 | apache/spark | 44,074 | 29,398 | Apache Spark - A unified analytics engine for large-scale data processing | 2026-09-27 |
| 3↓5 | lichess-org/lila | 18,775 | 2,800 | ♞ lichess.org: the forever free, adless and open source chess server ♞ | 2026-09-27 |
| 4↓17 | prisma/prisma1 | 16,377 | 837 | 💾 Database Tools incl. ORM, Migrations and Admin UI (Postgres, MySQL & MongoDB) [deprecated] | 2022-09-01 |
| 5↓14 | scala/scala | 14,562 | 3,217 | Scala 2 compiler and standard library. Scala 2 bugs at https://github.com/scala/bug; Scala 3 at https://github.com/scala/scala3 | 2026-09-24 |
| 6↓12 | akka/akka-core | 13,280 | 3,531 | A platform to build and run apps that are elastic, agile, and resilient. SDK, libraries, and hosted environments. | 2026-09-24 |
| 7↓13 | playframework/playframework | 12,617 | 4,016 | The Community Maintained High Velocity Web Framework For Java and Scala. | 2026-09-27 |
| 8↓16 | apache/predictionio | 12,516 | 1,895 | PredictionIO, a machine learning server for developers and ML engineers. | 2021-01-09 |
| 9↓14 | rtyley/bfg-repo-cleaner | 12,190 | 582 | Removes large or troublesome blobs like git-filter-branch does, but faster. And written in Scala | 2025-01-19 |
| 10↓19 | yahoo/CMAK | 11,922 | 2,472 | CMAK is a tool for managing Apache Kafka clusters | 2023-08-02 |
| 11↓26 | gitbucket/gitbucket | 9,403 | 1,266 | A Git platform powered by Scala with easy installation, high extensibility & GitHub API compatibility | 2026-09-27 |
| 12↓23 | delta-io/delta | 9,022 | 2,185 | An open-source storage framework that enables building a Lakehouse architecture with compute engines including Spark, PrestoDB, Flink, Trino, and Hive and APIs | 2026-09-26 |
| 13↓24 | twitter/finagle | 8,867 | 1,427 | A fault tolerant, protocol-agnostic RPC system | 2026-08-13 |
| 14↓27 | twitter-archive/snowflake | 7,759 | 1,110 | Snowflake is a network service for generating unique ID numbers at high scale with some simple guarantees. | 2020-07-22 |
| 15↓21 | OpenXiangShan/XiangShan | 7,274 | 948 | Open-source high-performance RISC-V processor | 2026-09-27 |
| 16↓35 | snowplow/snowplow | 7,034 | 1,172 | The leader in Customer Data Infrastructure | 2026-06-26 |
| 17↓37 | gatling/gatling | 6,958 | 1,207 | Modern Load Testing as Code | 2026-09-27 |
| 18↓27 | lhartikk/ArnoldC | 6,889 | 293 | Arnold Schwarzenegger based programming language | 2024-01-31 |
| 19↓34 | apache/openwhisk | 6,797 | 1,178 | Apache OpenWhisk is an open source serverless cloud platform | 2026-09-08 |
| 20↓34 | scala/scala3 | 6,305 | 1,179 | The Scala 3 compiler, also known as Dotty. | 2026-09-26 |
| 21↓27 | guardian/frontend | 5,900 | 573 | The Guardian DotCom. | 2026-09-25 |
| 22↓25 | fpinscala/fpinscala | 5,864 | 3,034 | Code, exercises, answers, and hints to go along with the book "Functional Programming in Scala" | 2024-12-11 |
| 23↓33 | typelevel/cats | 5,469 | 1,244 | Lightweight, modular, and extensible library for functional programming. | 2026-09-22 |
| 24↓32 | linkerd/linkerd | 5,308 | 493 | Old repo for Linkerd 1.x. See the linkerd2 repo for Linkerd 2.x. | 2023-03-04 |
| 25↓38 | microsoft/SynapseML | 5,247 | 868 | Simple and Distributed Machine Learning Python Library porting ML algorithms for Spark | 2026-09-25 |
| 26↓40 | sbt/sbt | 4,953 | 1,047 | sbt, the interactive build tool | 2026-09-27 |
| 27↓42 | airbnb/aerosolve | 4,807 | 562 | A machine learning package built for humans. | 2025-11-06 |
| 28↓25 | chipsalliance/chisel | 4,793 | 659 | Chisel: A Modern Hardware Design Language | 2026-09-27 |
| 29↓45 | scala-js/scala-js | 4,710 | 407 | Scala.js, the Scala to JavaScript compiler | 2026-09-27 |
| 30↓42 | scala-native/scala-native | 4,694 | 396 | Your favorite language gets closer to bare metal. | 2026-09-27 |
| 31↓38 | scalaz/scalaz | 4,667 | 697 | Principled Functional Programming in Scala | 2026-09-19 |
| 32↓42 | zio/zio | 4,420 | 1,585 | ZIO — A type-safe, composable library for async and concurrent programming in Scala | 2026-09-25 |
| 33↓44 | mesos/chronos | 4,373 | 518 | Fault tolerant job scheduler for Mesos which handles dependencies and ISO8601 based schedules | 2022-06-29 |
| 34↓46 | JohnSnowLabs/spark-nlp | 4,158 | 744 | State of the Art Natural Language Processing | 2026-09-26 |
| 35↓46 | d2iq-archive/marathon | 4,026 | 830 | Deploy and manage containers (including Docker) on top of Apache Mesos at scale. | 2022-09-08 |
| 36↓59 | TheHive-Project/TheHive | 3,948 | 695 | TheHive is a Collaborative Case Management Platform, now distributed as a commercial version | 2025-07-25 |
| 37↓23 | chipsalliance/rocket-chip | 3,875 | 1,307 | Rocket Chip Generator | 2026-09-13 |
| 38↓65 | twitter-archive/diffy | 3,812 | 360 | Find potential bugs in your services with Diffy | 2020-07-01 |
| 39↓60 | awslabs/deequ | 3,648 | 586 | Deequ is a library built on top of Apache Spark for defining "unit tests for data", which measure data quality in large datasets. | 2026-09-16 |
| 40↓50 | Netflix/atlas | 3,568 | 358 | In-memory dimensional time series database. | 2026-09-21 |
| 41↑57 | joernio/joern | 3,531 | 465 | Open-source code analysis platform for C/C++/Java/Binary/Javascript/Python/Kotlin based on code property graphs. Discord https://discord.gg/vv4MH284Hc | 2026-09-26 |
| 42↓68 | twitter/scalding | 3,524 | 699 | A Scala API for Cascading | 2023-05-28 |
| 43↓58 | lw-lin/CoolplaySpark | 3,473 | 1,376 | 酷玩 Spark: Spark 源代码解析、Spark 类库等 | 2022-05-18 |
| 44↓63 | scalanlp/breeze | 3,453 | 689 | Breeze is/was a numerical processing library for Scala. | 2025-10-04 |
| 45↓54 | milessabin/shapeless | 3,400 | 520 | Generic programming for Scala | 2026-09-23 |
| 46↓49 | twitter-archive/flockdb | 3,315 | 245 | A distributed, fault-tolerant graph database | 2017-03-16 |
| 47↓66 | xxf098/shadowsocksr-v2ray-trojan-android | 3,161 | 373 | A simple client for Android | 2024-02-25 |
| 48↓59 | databricks/Spark-The-Definitive-Guide | 3,152 | 2,908 | Spark: The Definitive Guide's Code Repository | 2020-08-26 |
| 49↓28 | softwaremill/elasticmq | 2,939 | 204 | In-memory message queue with an Amazon SQS-compatible interface. Runs stand-alone or embedded. | 2026-09-26 |
| 50↓81 | spark-jobserver/spark-jobserver | 2,834 | 967 | REST job server for Apache Spark | 2026-03-03 |
| 51↓80 | com-lihaoyi/mill | 2,793 | 447 | 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 | 2026-09-27 |
| 52↓73 | twitter-archive/kestrel | 2,752 | 307 | simple, distributed message queue system (inactive) | 2016-01-22 |
| 53↓63 | aditya-grover/node2vec | 2,739 | 904 | — | 2022-07-21 |
| 54↓63 | twitter/util | 2,719 | 570 | Wonderful reusable code from Twitter | 2025-12-08 |
| 55↓70 | slick/slick | 2,665 | 611 | Slick (Scala Language Integrated Connection Kit) is a modern database query and access library for Scala | 2026-09-27 |
| 56↓85 | scalatra/scalatra | 2,647 | 334 | Tiny Scala high-performance, async web framework, inspired by Sinatra | 2026-09-27 |
| 57↓62 | scala-exercises/scala-exercises | 2,645 | 535 | The easy way to learn Scala. | 2025-09-23 |
| 58↓62 | spotify/scio | 2,630 | 535 | A Scala API for Apache Beam and Google Cloud Dataflow. | 2026-09-25 |
| 59↓65 | com-lihaoyi/Ammonite | 2,629 | 365 | Scala Scripting | 2026-08-31 |
| 60↓56 | lagom/lagom | 2,627 | 617 | Reactive Microservices for the JVM | 2023-08-14 |
| 61↓71 | http4s/http4s | 2,625 | 818 | A minimal, idiomatic Scala interface for HTTP | 2026-09-24 |
| 62↓66 | circe/circe | 2,540 | 546 | Yet another JSON library for Scala | 2026-09-14 |
| 63↓59 | spray/spray | 2,493 | 548 | A suite of scala libraries for building and consuming RESTful web services on top of Akka: lightweight, asynchronous, non-blocking, actor-based, testable | 2017-02-21 |
| 64↓89 | geekyouth/SZT-bigdata | 2,474 | 611 | 深圳地铁大数据客流分析系统🚇🚄🌟 | 2026-05-12 |
| 65↓60 | typelevel/fs2 | 2,454 | 634 | Compositional, streaming I/O library for Scala | 2026-09-19 |
| 66↓61 | metarank/metarank | 2,444 | 107 | A low code Machine Learning personalized ranking service for articles, listings, search results, recommendations that boosts user engagement. A friendly Learn-t | 2026-09-27 |
| 67↑36 | ucb-bar/chipyard | 2,402 | 920 | An Agile RISC-V SoC Design Framework with in-order cores, out-of-order cores, accelerators, and more | 2026-09-25 |
| 68↓68 | apache/kyuubi | 2,368 | 1,024 | Apache Kyuubi is a distributed and multi-tenant gateway to provide serverless SQL on data warehouses and lakehouses. | 2026-09-24 |
| 69↓91 | scalameta/metals | 2,332 | 443 | Scala language server with rich IDE features 🚀 | 2026-09-25 |
| 70↓86 | twitter/algebird | 2,296 | 345 | Abstract Algebra for Scala | 2025-11-21 |
| 71↓91 | salesforce/TransmogrifAI | 2,276 | 399 | TransmogrifAI (pronounced trăns-mŏgˈrə-fī) is an AutoML library for building modular, reusable, strongly typed machine learning workflows on Apache Spark with m | 2026-06-02 |
| 72↓83 | twitter/finatra | 2,274 | 402 | Fast, testable, Scala services built on TwitterServer and Finagle | 2025-08-18 |
| 73↓18 | riscv-boom/riscv-boom | 2,246 | 530 | SonicBOOM: The Berkeley Out-of-Order Machine | 2026-09-11 |
| 74↓96 | twitter-archive/gizzard | 2,244 | 206 | [Archived] A flexible sharding framework for creating eventually-consistent distributed datastores | 2017-03-16 |
| 75↓70 | typelevel/cats-effect | 2,238 | 578 | The pure asynchronous runtime for Scala | 2026-09-18 |
| 76↓82 | typelevel/doobie | 2,225 | 379 | Functional JDBC layer for Scala. | 2026-09-26 |
| 77↓91 | laurilehmijoki/s3_website | 2,215 | 175 | Manage an S3 website: sync, deliver via CloudFront, benefit from advanced S3 website features. | 2023-03-23 |
| 78↓108 | zio/zio-quill | 2,166 | 352 | Compile-time Language Integrated Queries for Scala | 2026-09-27 |
| 79↓80 | coursier/coursier | 2,137 | 334 | Pure Scala Artifact Fetching | 2026-09-23 |
| 80↓98 | twitter/summingbird | 2,121 | 256 | Streaming MapReduce with Scalding and Storm | 2022-01-19 |
| 81↓88 | pocorall/scaloid | 2,088 | 157 | Scaloid makes your Android code easy to understand and maintain. | 2026-08-20 |
| 82↑32 | ValeLang/Vale | 2,018 | 59 | Compiler for the Vale programming language - http://vale.dev/ | 2026-09-23 |