Open Source Haskell Software Development Software - Page 3

A compiler which translated AspectFun program into Haskell.

Assorted projects. General-purpose libraries for Python, C++, Scala, bash, and others. Meta-programming tools. System utilities. UI components. Web APIs. Configuration files. Benchmarks. Programming competition entries. And much more.

Asterius is a Haskell toolchain that compiles to WebAssembly, enabling Haskell programs to run in the browser and other Wasm hosts. It builds on GHC, lowers Haskell code to WebAssembly modules, and links them with a lightweight JavaScript runtime for I/O, GC interaction, and host integration. The toolchain provides commands to build and link (ahc/ahc-link), bundle assets, and target both browser and Node environments. Interop is a core focus: Haskell functions can call into JavaScript and vice versa, making it feasible to combine Haskell logic with web APIs. Asterius aims to keep as much of Haskell’s runtime model as practical while delivering the portability and startup characteristics of Wasm. By bridging GHC and WebAssembly, it opens a path to reuse Haskell libraries on the client side without switching languages.

A library to automatically create GUI forms, using WxHaskell and "Scrap Your Boilerplate" generics.

Brick is a Haskell terminal user interface (TUI) programming toolkit that enables developers to build rich, responsive terminal applications via a declarative model: you define a pure function that renders the UI from application state and supply state transition logic to handle events. brick exposes a declarative API. Unlike most GUI toolkits which require you to write a long and tedious sequence of widget creations and layout setup, brick just requires you to describe your interface using a set of declarative layout combinators. Event-handling is done by pattern-matching on incoming events and updating your application state. Under the hood, this library builds upon vty, so some knowledge of Vty will be necessary to use this library. Brick depends on vty-crossplatform, so Brick should work anywhere Vty works (Unix and Windows). Brick releases prior to 2.0 only support Unix-based systems.

Cabal is a system for building and packaging Haskell libraries and programs. It defines a common interface for package authors and distributors to easily build their applications in a portable way. Cabal is part of a larger infrastructure for distributing, organizing, and cataloging Haskell libraries and programs. The term cabal can refer to either: cabal-the-spec (.cabal files), cabal-the-library (code that understands .cabal files), or cabal-the-tool (the cabal-install package which provides the cabal executable); usually folks are referring to cabal-the-tool when they say cabal. To install the cabal executable you can use ghcup (if you're using Linux), the Haskell Platform, install the cabal-install package from your distributions package manager (if using Linux or Mac), or download the source or prebuilt binary from the Download page.

Corrode is an experimental translator that converts C code into Rust, intended to help migrate existing C codebases toward safer Rust idioms. It parses C, maps C types and constructs into Rust equivalents, and generates code that compiles under rustc, introducing unsafe only when necessary. The tool seeks to produce readable Rust that a developer can then refine by hand, rather than a perfect one-to-one mechanical translation. It handles common C features such as pointers, structs, enums, arrays, and function calls, while flagging areas that need attention during the migration. Preprocessor handling and tricky macro patterns are approached pragmatically, aiming for working output over exhaustive transformation. As a proof-of-concept, it demonstrates how automated tooling can accelerate moving from legacy C to a memory-safe language without a full rewrite.

A programming language designed for searching and manipulating tree-structured data, particularly corpora of natural languages encoded in an s-expression-like format.

A cross-platform unit testing framework for C++.

DAU is a set of easy to use utilites for Dokuwiki administration. They help to see and analyse the whole structure graph of a wiki, manage users and groups, find unneeded uploaded media. For more information please visit http://dau.sourceforge.net/

Command line tools and smart contract libraries for Ethereum smart contract development. All you need Ethereum development tool. Build, test, fuzz, formally verify, debug & deploy solidity contracts. Ethereum CLI. Query contracts, send transactions, follow logs, slice & dice data. Testing-oriented EVM implementation. Debug, fuzz, or symbolically execute code against local or mainnet state. Sign Ethereum transactions from a local keystore or hardware wallet. dapptools is currently in a stage of clandestine development where support for the casual user may be deprived. The software can now be considered free as in free puppy. Users seeking guidance can explore using foundry as an alternative. This repository contains the source code for several programs hand-crafted and maintained by DappHub, along with dependency management, courtesy of Nix.

DebToo - Debian powered from source. Portage-like configurability brought into Debian with the goodies known to Gentoo users: USE flags, optimised packages, hand picked patches, fine grained tweaking performance, inherted configurations.

Echidna is a weird creature that eats bugs and is highly electrosensitive (with apologies to Jacob Stanley) More seriously, Echidna is a Haskell program designed for fuzzing/property-based testing of Ethereum smarts contracts. It uses sophisticated grammar-based fuzzing campaigns based on a contract ABI to falsify user-defined predicates or Solidity assertions. We designed Echidna with modularity in mind, so it can be easily extended to include new mutations or test specific contracts in specific cases. Optional corpus collection, mutation and coverage guidance to find deeper bugs. Powered by Slither to extract useful information before the fuzzing campaign. Source code integration to identify which lines are covered after the fuzzing campaign. Curses-based retro UI, text-only or JSON output.

A powerful programming language to build concurrent & distributed systems on the JVM. Eta is a pure, lazy, strongly typed functional programming language on the JVM. It brings two big ecosystems, the JVM and Haskell, together. This allows you to harness the best of both ecosystems to build your applications quickly and effectively. Eta's concurrency support helps you to build highly scalable systems. Eta has a strongly-typed Foreign Function Interface (FFI) that allows you to safely interoperate with Java. Eta has global type inference, giving you a dynamic language experience, but with a strong typing hidden underneath. Eta offers a wide range of strategies for handling concurrency including Software Transaction Memory (STM), MVars, and Fibers. Using the powerful and type-safe Servant web framework, we define our API as a type and the handler types for each endpoint are automatically generated and conversions happen automatically.

Eve is intended to be a Haskell-derived language with more familiar (Python/Rubyish) syntax. Short term, think of it as a gateway drug to Haskell for Python/Ruby programmers. Long-term, it's intended to be a practical (DB/webapp/GUI-enabled) Haskell.

Here we have fun developing software related to embedded extension languages and small languages in many application domains, using existing languages and/or creating new ones.

Functional Networked Integrated Environment (FUNNIE) is a networked CSCW programming environment specifically tuned to the needs of students and instructors, based on a subset of Haskell.

Fay is a compiler for a proper subset of Haskell that type-checks using GHC and compiles to JavaScript. It supports pure functional programming, a Fay-specific monad, FFI, optional tail-call optimization, and integration with Cabal packages. GHC-compatible type checking, ensuring correctness. Lazy, pure functional semantics with a distinct Fay monad. Foreign Function Interface (FFI) to integrate native JS code. Compatible with standard Haskell packaging tools like Cabal.

The Fluxion framework is a prototype data integration system using Semantic Web technologies.

A collection of general or specific tools created in the process of creating other, larger programs.

This repository is a tutorial collection showcasing functional programming concepts across multiple languages (Haskell, OCaml, Scala, Scheme, Clojure, Python). It provides reusable code snippets, examples, and case studies to illustrate FP ideas in a comparative manner. The purpose of this tutorial is to illustrate functional programming concepts in many languages by providing reusable and useful snippets of code, examples, case studies and applications. The project’s web site was updated and improved with a table of contents on side-bar. In addition, the new layout makes reading easier to read and browse the content. Those pages in the theme are in the gh-pages branch which can easy be downloaded for offline usage.

Fusion is a powerful high level programming language that merges several feature from Ruby, Python, Java, C++, Visual Basic, etc, in a only language. It's implemented by means of a compiler written in Haskell that generates Ruby code.

GHC (Glasgow Haskell Compiler) is the leading open-source compiler and interactive environment for the Haskell programming language, supporting the Haskell 2010 standard plus numerous language extensions. It compiles to native machine code (via LLVM or C), and includes the interactive GHCi REPL. For full information on building GHC, see the GHC Building Guide. Here follows a summary - if you get into trouble, the Building Guide has all the answers. For building library documentation, you'll need Haddock. To build the compiler documentation, you need Sphinx and Xelatex (only for PDF output).

GHCJS is a Haskell-to-JavaScript compiler that reuses GHC’s front end to compile Haskell source into JavaScript for execution in browsers and Node.js. It aims to preserve Haskell’s semantics—including laziness and rich types—by shipping a small runtime and shims for core libraries. Developers write normal Haskell, use Cabal/Stack to build, then bundle the generated JavaScript alongside required support code. Interoperability with the JavaScript world is provided through a foreign-function interface, allowing Haskell code to call browser APIs or Node modules and to be called back from JS. The ecosystem includes packages tailored to GHCJS (for example DOM bindings and FRP libraries), enabling full single-page apps written in Haskell. Because it mirrors GHC closely, many pure Haskell libraries “just work,” making it practical to share code between server and client.

ghcid is a minimalist development tool for Haskell that runs GHCi as a daemon, watches source files for changes, reloads automatically, and shows compile errors instantly—providing a tight edit-feedback loop. In general, to use ghcid, you first need to get ghci working well for you. In particular, craft a command line or .ghci file such that when you start ghci it has loaded all the files you care about (check :show modules). If you want to use --test check that whatever expression you want to use works in that ghci session. Getting ghci started properly is one of the hardest things of using ghcid, and while ghcid has a lot of defaults for common cases, it doesn't always work out of the box. Expressions that read from standard input are likely to hang, given that Ghcid already uses the standard input to interact with Ghci.