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most starred
Scala repos

the most-starred Scala repositories on github, all time. live from the source.

top Scala repos

ranked by github stars.

TW

twitter/the-algorithm

Source code for the X Recommendation Algorithm
73,950
stars
AP

apache/spark

Apache Spark - A unified analytics engine for large-scale data processing
44,073
stars
LI

lichess-org/lila

♞ lichess.org: the forever free, adless and open source chess server ♞
18,774
stars
04
PR

prisma/prisma1

💾 Database Tools incl. ORM, Migrations and Admin UI (Postgres, MySQL & MongoDB) [deprecated]
16,377
stars
05
SC

scala/scala

Scala 2 compiler and standard library. Scala 2 bugs at https://github.com/scala/bug; Scala 3 at https://github.com/scala/scala3
14,562
stars
06
AK

akka/akka-core

A platform to build and run apps that are elastic, agile, and resilient. SDK, libraries, and hosted environments.
13,280
stars
07
PL

playframework/playframework

The Community Maintained High Velocity Web Framework For Java and Scala.
12,617
stars
08
AP

apache/predictionio

PredictionIO, a machine learning server for developers and ML engineers.
12,516
stars
09
RT

rtyley/bfg-repo-cleaner

Removes large or troublesome blobs like git-filter-branch does, but faster. And written in Scala
12,190
stars
10
YA

yahoo/CMAK

CMAK is a tool for managing Apache Kafka clusters
11,922
stars
11
GI

gitbucket/gitbucket

A Git platform powered by Scala with easy installation, high extensibility & GitHub API compatibility
9,403
stars
12
DE

delta-io/delta

An open-source storage framework that enables building a Lakehouse architecture with compute engines including Spark, PrestoDB, Flink, Trino, and Hive and APIs
9,022
stars
13
TW

twitter/finagle

A fault tolerant, protocol-agnostic RPC system
8,867
stars
14
TW

twitter-archive/snowflake

Snowflake is a network service for generating unique ID numbers at high scale with some simple guarantees.
7,759
stars
15
OP

OpenXiangShan/XiangShan

Open-source high-performance RISC-V processor
7,274
stars
16
SN

snowplow/snowplow

The leader in Customer Data Infrastructure
7,034
stars
17
GA

gatling/gatling

Modern Load Testing as Code
6,958
stars
18
LH

lhartikk/ArnoldC

Arnold Schwarzenegger based programming language
6,889
stars
19
AP

apache/openwhisk

Apache OpenWhisk is an open source serverless cloud platform
6,797
stars
20
SC

scala/scala3

The Scala 3 compiler, also known as Dotty.
6,305
stars
21
GU

guardian/frontend

The Guardian DotCom.
5,900
stars
22
FP

fpinscala/fpinscala

Code, exercises, answers, and hints to go along with the book "Functional Programming in Scala"
5,864
stars
23
TY

typelevel/cats

Lightweight, modular, and extensible library for functional programming.
5,469
stars
24
LI

linkerd/linkerd

Old repo for Linkerd 1.x. See the linkerd2 repo for Linkerd 2.x.
5,308
stars
25
MI

microsoft/SynapseML

Simple and Distributed Machine Learning Python Library porting ML algorithms for Spark
5,247
stars

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