Open Source Haskell Software - Page 8
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Haskell Software
Browse free open source Haskell Software and projects below. Use the toggles on the left to filter open source Haskell Software by OS, license, language, programming language, and project status.
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Seaweed is a library for the functional programming language Haskell. The current focus of this library is on XML, and the internet. The Haskell Web Publisher (http://hwp.sourceforge.net/) is based on Seaweed.
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Semantic
Parsing, analyzing, and comparing source code across many languages
semantic is a Haskell library and command line tool for parsing, analyzing, and comparing source code. Run semantic --help for complete list of up-to-date options. Semantic uses tree-sitter to generate parse trees, but layers in a more generalized notion of syntax terms across all supported programming languages. We'll see why this is important when we get to diffs and program analysis, but for now let's just inspect some output. It helps to have a simple program to parse. Symbols are named identifiers driven by the ASTs. This is the format that github.com uses to generate code navigation information allowing c-tags style lookup of symbolic names for fast, incremental navigation in all the supported languages. The incremental part is important because files change often so we want to be able to parse just what's changed and not have to analyze the entire project again. -
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Servant
Haskell DSL for describing, serving, querying, mocking web apps
Servant provides a type-level domain-specific language (DSL) in Haskell for describing web APIs. From a single API specification, developers can derive server implementations, client libraries, documentation, and more—ensuring consistency and type safety across the stack. We have a tutorial that introduces the core features of servant. After this article, you should be able to write your first server web services, learning the rest from the haddocks' examples. The core documentation can be found here. Other blog posts, videos, and slides can be found on the website. The core documentation can be found here. Other blog posts, videos and slides can be found on the website. -
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Sharp Statistics
A simple program for comparing data sets with simple algorithms.
Replace the data in the data.db file with your own data using an sqlite3 manager. Tables are read as data set names, and the values are read as the data points of the data sets. Load the application, choose an algorithm, and the program will find the pairs that best match each other. -
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Simula
Linux VR Desktop
Simula is a virtual reality (VR) window manager and desktop environment for Linux, built atop the Godot engine. It provides a VR-based Linux desktop experience, enabling productive workflows in AR/VR with immersive window management. A common objection to the viability of VR Desktop is that it exhibits poor text quality; however, with our low pass filter, Simula has taken special care to make text quality as clear as possible. The left image is a VR terminal without our filter applied; the right is the same image with our filter applied. Compared to other VR Desktops, Simula allows for longer sessions without uncomfortable eye strain. In Simula, VR Windows become “active” once you look at them. Active windows receive (i) typing events from the keyboard and (ii) cursor events from any mouse movement. -
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Software Design in Haskell
Software Design in Haskell
This repository accompanies a comprehensive guide to building large, maintainable Haskell systems, focusing on architecture, modularity, and practical design techniques. It presents patterns for separating pure domain logic from side effects, organizing code into layers and components that can be tested in isolation. Readers encounter multiple styles—MTL/typeclass constraints, tagless-final encodings, free and freer monads, ReaderT-style application environments—and learn when to apply each. The examples emphasize explicit boundaries for infrastructure concerns such as persistence, logging, configuration, and external services to keep business logic clean. Throughout, the code illustrates dependency inversion in Haskell, showing how to swap implementations without pervasive rewrites. The result is a cookbook of strategies and runnable examples that help teams structure real-world Haskell applications beyond small scripts or academic exercises. -
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Soutei is a trust-management system for access control in distributed systems. Soutei policies and credentials are written in a declarative logic-based language. Soutei policies are modular, concise, readable, supporting conditional delegation.
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The SpindleCAD is a machine-tool spindle design software. It helps engineers check properties of finished construction and optimize construction with respect to precision and productivity.
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Spock
Another Haskell web framework for rapid development
Kickstart your next Haskell web application within seconds using Spock. Another Haskell web framework for rapid development. Spock is a lightweight Haskell web framework inspired by Ruby's Sinatra. It provides a full toolbox including everything to get a quick start into web programming using Haskell. Spock provides fast route dispatching in a type-safe environment. Built-in support for cookies, secure sessions and CSRF protection. Applications supported by Spock are easily deployed using stack, or Docker. Spock and all ecosystem packages are open sourced on Github. Feel free to review code or contribute. -
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Stunts Cartography
Power tools for creating Stunts track maps.
This repository is no longer updated regularly; please visit https://github.com/duplode/stunts-cartography for up-to-date sources. Power tools for track map rendering and analysis for the classic racing game Stunts. -
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This is the extended euclidean algorithm implemented in haskell. It will put every single step of the algorithm in a file and show the actual result and everything in between.
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TensorFlow Haskell
Haskell bindings for TensorFlow
The tensorflow-haskell package provides Haskell-language bindings for TensorFlow, giving Haskell developers the ability to build and run computation graphs, machine learning models, and leverage TensorFlow's ecosystem—though it is not an official Google release. As an expedient we use docker for building. Once you have docker working, the following commands will compile and run the tests. Run the install_macos_dependencies.sh script in the tools/ directory. The script installs dependencies via Homebrew and then downloads and installs the TensorFlow library on your machine under /usr/local. The stack.yaml file describes a NixOS environment containing the necessary dependencies. -
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TerraHS is a software component that enables the development of geographical applications in a functional language, using the data handling capabilities and spatial operations of TerraLib.
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The Fission CL
Command-line interface for Fission
The Fission CLI is now part of the main fission-suite/fission repo. We construct identity, data, and compute solutions for the future of the Internet. Users want data ownership and privacy without compromising on a seamless experience. You want to build a resilient application that is fast, cost-effective, and efficient. We build local-first and edge computing tools that make all of this possible. Fission builds open source protocols and managed solutions that empower developers to construct humane software applications. -
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The Glasgow Haskell Compiler is a robust, fully-featured, optimising compiler for the Haskell 98 programming language. Please note, we are no longer using the SourceForge bug tracker. Please go to http://cvs.haskell.org/trac/ghc instead.
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The HaskellR project
The full power of R in Haskell
The HaskellR project provides an environment for efficiently processing data using Haskell or R code, interchangeably. HaskellR allows Haskell functions to seamlessly call R functions and vice versa. It provides the Haskell programmer with the full breadth of existing R libraries and extensions for numerical computation, statistical analysis and machine learning. Optionally, pass in the --nix flag to all commands if you have the Nix package manager installed. Nix can populate a local build environment including all necessary system dependencies without touching your global filesystem. Use it as a cross-platform alternative to Docker. -
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A Unix desktop environment, using multi-processing as the principle method of program partitioning and built around the everything-is-a-file assumption, with scripting using the programming language Haskell.
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TheSLinux
A Linux distro for Vietnamese
TheSLinux is a Linux distribution that primarily focuses on the Vietnamese users. This distro aims to be fully qualified open source distribution in Vietnam. The first generation is based on ArchLinux. -
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A Haskell implementation of the Three Man morris game together with an AI for playing against the Computer. Command line based, needs Haskell interpreter.
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Tidal
Pattern language
Tidal Cycles (or just Tidal for short) is software for making patterns with code, whether live coding music at algoraves or composing in the studio. It includes a simple and flexible notation for rhythmic sequences and an extensive library of patterning functions for combining and transforming them. This allows you to quickly create complex patterns from simple ingredients. By default, sound is made with the featureful SuperDirt synth/sampler, but you can control other synths using Open Sound Control (OSC) or MIDI. Whether you're using SuperDirt or a synth, every filter and effect can be manipulated independently with Tidal patterns. Tidal is embedded in the Haskell language, although you don't have to learn Haskell to learn Tidal. You can learn Tidal through experimentation and play, most Tidal coders have little or no experience in software engineering. -
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Toodles
Project management directly from the TODOs in your codebase
Toodles is a dead-simple, self-hosted web-based to-do list application that scans your codebase for TODO comments and displays them in a clean dashboard. It helps developers keep track of pending work scattered across files, making it easier to manage technical debt and pending improvements. -
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The triangle peg puzzle is a well known puzzle with 15 holes in a triangle, and 14 pegs. This project consists of solvers for that puzzle in multiple languages, to try to get a feel for each language.
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A set of MediaWiki extensions and other tools developed for the Twelf wiki (http://twelf.plparty.org) that enable a wiki to naturally incorporate logic Twelf in a number of meaningful and useful ways.
