Projects

Our projects cover a wide range of domains, from general functional programming to tooling.

argonaut-shapeless

Automatic derivation for argonaut

Typelevel Affiliate Project

banana-rdf

RDF, SPARQL and Linked Data technologies

Typelevel Affiliate Project

cats-scalatest

Scalatest bindings for Cats.

Typelevel Affiliate Project

Ciris

Functional Configurations for Scala

Typelevel Affiliate Project

coulomb

A statically typed unit analysis library for Scala

Typelevel Affiliate Project

cron4s

Cross-platform CRON expression parsing for Scala

Typelevel Affiliate Project

decline

A composable command-line parser for Scala.

Command-line parsing

Typelevel Affiliate Project

doobie

A pure functional JDBC layer for Scala. It is not an ORM, nor is it a relational algebra; it just provides a principled way to construct programs (and higher-level libraries) that use JDBC.

Principled database access

Typelevel Affiliate Project

eff

Extensible effects are an alternative to monad transformers for computing with effects in a functional way. This library is based on the “free-er” monad and an “open union” of effects described by Oleg Kiselyov in “Freer monads, more extensible effects”

effects

Typelevel Affiliate Project

Extruder

Populate case classes from any configuration source

Typelevel Affiliate Project

Fetch

Library built on top of Cats that provides efficient data access from heterogeneous dataurces

Typelevel Affiliate Project

Finch

Purely functional basic blocks atop of Finagle for building composable HTTP APIs

Typelevel Affiliate Project

fs2-data

Parse and transform data (CBOR, CSV, JSON, XML) in a streaming manner

Stream Processing

Typelevel Affiliate Project

Hammock

Purely functional HTTP client

Typelevel Affiliate Project

http4s

A typeful, purely functional HTTP library for client and server applications

Typelevel Affiliate Project

imp

Summoning implicit values

Typelevel Affiliate Project

Libra

Compile time dimensional analysis for any problem domain

Typelevel Affiliate Project

Monix

High-performance library for composing asynchronous, event-based programs, exposing a Reactive Streams implementation along with primitives for dealing with concurrency and side-effects.

Asynchronous, Reactive Programming

Typelevel Affiliate Project

Monocle

Optics library offering a simple yet powerful API to access and transform immutable data

Lenses for Scala

Typelevel Affiliate Project

Outwatch

The Functional and Reactive Web-Frontend Library for Scala.js

Typelevel Affiliate Project

parsley-cats

The parsley-cats library exposes Cats instances for Parsley parsing library.

Typelevel Affiliate Project

PureConfig

A boilerplate-free library for loading configuration files

Typelevel Affiliate Project

refined

Tools for refining types with type-level predicates which constrain the set of values described by the refined type, for example restricting to positive or negative numbers.

Constraints on types

Typelevel Affiliate Project

scalacheck-shapeless

Automatic derivation for ScalaCheck

Typelevel Affiliate Project

Scala Exercises

Platform and framework for Scala devs to learn about Scala libraries

Typelevel Affiliate Project

scala-steward

A robot that helps keeping Scala projects up-to-date

Typelevel Affiliate Project

scodec

scodec is a combinator library for working with binary data. It focuses on contract-first and pure functional encoding and decoding of binary data and provides integration with shapeless.

Binary serialization

Typelevel Affiliate Project

Scoverage

Code coverage tool for Scala

Typelevel Affiliate Project

Shapeless

Shapeless is a generic programming library. Starting with implementations of Scrap your boilerplate and higher rank polymorphism in Scala, it quickly grew to provide advanced abstract tools like heterogenous lists and automatic instance derivation for type classes.

Generic Programming

Typelevel Affiliate Project

singleton-ops

Operations for primitive and String singleton types

Typelevel Affiliate Project

sonic

Property-based testing with integrated shrinking

Typelevel Affiliate Project

specs2

specs2 is a library for writing executable software specifications, aiming for conciseness, readability and extensibility.

Expressive specifications

Typelevel Affiliate Project

TwoTails

A compiler plugin adding support for mutual tail recursion

Typelevel Affiliate Project

uniform-scala

Functional user journeys

Typelevel Affiliate Project

Submitting

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