Explore every measured repository

Sort projects by how fast they reply.

1,587 repositories measured. Index updated 11 Oct 2026.

Python 608

JavaScript 248

HTML 195

TypeScript 189

C++ 147

C 140

Shell 135

Java 101

CSS 95

Go 72

Jupyter Notebook 69

Rust 64

SCSS 38

Ruby 35

PHP 34

Makefile 33

Dart 31

Julia 28

Scala 27

Kotlin 23

Dockerfile 22

Perl 21

CMake 20

Python 608

JavaScript 248

HTML 195

TypeScript 189

C++ 147

C 140

Shell 135

Java 101

CSS 95

Go 72

Jupyter Notebook 69

Rust 64

SCSS 38

Ruby 35

PHP 34

Makefile 33

Dart 31

Julia 28

Scala 27

Kotlin 23

Dockerfile 22

Perl 21

CMake 20

Search by name, language, framework or topicSort by

27 repositories matchClear allProjects measured on 20 or more outside pull requests come first; a perfect record over a handful is partly luck.

cards table

scalascala3

6.3k

The Scala 3 compiler, also known as Dotty.

First reply: 21 h; 408 outside PRs
Merged: 88%; of 373 closed
Free issues: 0; available

ScalaGSoC 2025Got faster

Updated 11 Oct 2026

apachekafka

34k

Apache Kafka - A distributed event streaming platform

First reply: 3.3 days; 626 outside PRs
Merged

chipsalliancechisel

4.8k

Chisel: A Modern Hardware Design Language

First reply: 2 weeks; 31 outside PRs
Merged

scalascala-collection-compat

210

makes some Scala 2.13 APIs (primarily collections, also some others) available on 2.11 and 2.12, to aid cross-building

First reply: Mostly unanswered; 21 outside PRs
Merged

dbpediaextraction-framework

945

The software used to extract structured data from Wikipedia

First reply: 2 h; 6 outside PRs
Merged

scalascala

15k

Scala 2 compiler and standard library. Scala 2 bugs at https://github.com/scala/bug; Scala 3 at https://github.com/scala/scala3

First reply: 6 h; 13 outside PRs
Merged

typelevelcats

5.5k

Lightweight, modular, and extensible library for functional programming.

First reply: 7 h; 9 outside PRs
Merged

typelevelfs2

2.5k

Compositional, streaming I/O library for Scala

First reply: 21 h; 7 outside PRs
Merged

typelevelcats-effect

2.2k

The pure asynchronous runtime for Scala

First reply: 4.3 days; 13 outside PRs
Merged

typelevelskunk

1.7k

A data access library for Scala + Postgres.

First reply: 5.1 days; 9 outside PRs
Merged

scalascala3-example-project

339

An example sbt project that compiles using Dotty

First reply: 8.1 days; 15 outside PRs
Merged

chipsalliancerocket-chip

3.9k

Rocket Chip Generator

First reply: Mostly unanswered; 7 outside PRs
Merged

chipsalliancet1

324

No description.

First reply: Mostly unanswered; 7 outside PRs
Merged

dbpediagstore

Git repo / triple store hybrid graph storage

First reply: Not enough data; 0 outside PRs
Merged

scalascala-async

1.2k

An asynchronous programming facility for Scala

First reply: Mostly unanswered; 18 outside PRs
Merged

scalascala-java8-compat

438

A Java 8 (and up) compatibility kit for Scala.

First reply: Mostly unanswered; 17 outside PRs
Merged

scalascala-parallel-collections

219

Parallel collections standard library module for Scala 2.13+

First reply: Mostly unanswered; 19 outside PRs
Merged

scalascala-parser-combinators

679

simple combinator-based parsing for Scala. formerly part of the Scala standard library, now a separate community-maintained module

First reply: Mostly unanswered; 18 outside PRs
Merged

scalascala-xml

320

The standard Scala XML library

First reply: Mostly unanswered; 19 outside PRs
Merged

typelevelcats-collections

563

Data structures for pure functional programming in Scala

First reply: Not enough data; 1 outside PRs
Merged

typeleveldoobie

2.2k

Functional JDBC layer for Scala.

First reply: Not enough data; 4 outside PRs
Merged

typelevelframeless

896

Expressive types for Spark.

First reply: Not enough data; 1 outside PRs
Merged

typeleveljawn

436

Jawn is for parsing jay-sawn (JSON)

First reply: Not enough data; 0 outside PRs
Merged

typelevelkind-projector

922

Compiler plugin for making type lambdas (type projections) easier to write

First reply: Not enough data; 0 outside PRs
Merged

typelevelkittens

545

Automatic type class derivation for Cats

First reply: Not enough data; 1 outside PRs
Merged

typelevelLaika

455

Site and E-book Generator and Customizable Text Markup Transformer for sbt, Scala and Scala.js

First reply: Not enough data; 2 outside PRs
Merged

typelevelscalacheck

Property-based testing for Scala

First reply: Not enough data; 2 outside PRs
Merged

Results