Open Source Haskell Software - Page 7
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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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Linux Notification Center
A notification daemon/center for linux
A haskell-written notification center for users that like a desktop with style. The notification center receives notifications via DBUS (like any notification daemon) and shows them in the upper right corner of the screen. The notification (if not specified in the notification otherwise) will also be shown in the notification center even after the notification disappeared by itself. The notifications can be clicked to make them disappear. Notifications can be replaced by the use of the replaces-id feature of the notification specification. The notification center can (optionally) show user-specified buttons in the bottom that can be in two states (highlighted/not highlighted) and that can run customizable shell commands. -
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LiquidHaskell
Liquid Types For Haskell
This is the development site of the LiquidHaskell formal verification tool. If you're a LiquidHaskell user (or just curious), you probably want to go to the documentation website instead. LiquidHaskell (LH) refines Haskell's types with logical predicates that let you enforce important properties at compile time. LH warns you that head is not total as it is missing the case for [] and checks that it is total on NonEmpty lists. The input contract propagates to uses of head which are verified by ensuring the arguments are NonEmpty. LH lets you avoid off-by-one errors that can lead to crashes or buffer overflows. Dependent contracts let you specify, e.g. that dotProduct requires equal-sized vectors. LH checks that functions terminate and so warns about the infinite recursion due to the missing case in fib. -
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Lsl Plus is an edit/compile/test environment for the Linden Scripting Language (LSL), implemented as an Eclipse plug-in.
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The programme for generation of the Mandelbrot set (the set defined by mathematical equation z=z^2+c; z,c are complex numbers) employing 3D visualisation in addition to the popular 2D spectral-colour one.
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This is an implementation of the famous mastermind game written in the purely functional language Haskell. This is a console version, which have the ability for features to be added on top, such s a GUI, extra features and more...
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Matterhorn
A feature-rich Unix terminal client for the Mattermost chat system
Matterhorn is a terminal client for the Mattermost chat system. We provide pre-built binary releases for some platforms. Please see the release list to download a binary release for your platform that matches your server version. When you run Matterhorn you'll be prompted for your server URL and credentials. To connect, just paste your web client's Mattermost URL into the Server URL box and enter your credentials. See the Matterhorn User Guide on the details for providing each kind of supported credentials. For most of our binary releases, no additional packages need to be installed; they should just work out of the box. But here are some additional requirements that may apply for your platform. Matterhorn version strings will be of the form ABBCC.X.Y where ABBCC corresponds to the lowest Mattermost server version expected to be supported by the release. For example, if a release supports Mattermost server version 1.2.3, the ABBCC portion of the matterhorn version will be 10203. -
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MediaWiki To LaTeX converts MediaWiki markup to LaTeX and generates a PDF. So it provides an export from MediaWiki to LaTeX. It works with any project running MediaWiki, especially Wikipedia and Wikibooks.
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More Than Parsing is a parser generator for context free grammars defined in a BNF-like format. It generates scanners, parsers, ASTs, etc. This sf project is no longer active, development will continue in a different place.
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Neuron
Future-proof note-taking and publishing based on Zettelkasten
Neuron is a Zettelkasten-based note-taking system and static site generator built in Haskell. It allows users to manage interlinked notes using plain-text Markdown files, which are automatically rendered into a web-based knowledge base. Neuron supports incremental builds, backlinks, and efficient navigation across linked content, making it ideal for personal knowledge management, digital gardens, and wikis. It emphasizes speed, simplicity, and easy version control with Git. -
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Ormolu
A formatter for Haskell source code
Ormolu is a formatter for Haskell source code. Using GHC's own parser to avoid parsing problems caused by haskell-src-exts. Let some whitespace be programmable. The layout of the input influences the layout choices in the output. This means that the choices between single-line/multi-line layouts in certain situations are made by the user, not by an algorithm. This makes the implementation simpler and leaves some control to the user while still guaranteeing that the formatted code is stylistically consistent. Writing code in such a way so it's easy to modify and maintain. Implementing one “true” formatting style which admits no configuration. The formatting style aims to result in minimal diffs. Choose a style compatible with modern dialects of Haskell. As new Haskell extensions enter broad use, we may change the style to accommodate them. Idempotence: formatting already formatted code doesn't change it. -
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Paperboy
a small .pdf management tool with a command-line UI
Paperboy is a tiny .pdf management utility. If you download papers and other pdf documents, you might have noticed that filenames like 1412.4880.pdf are not terribly helpful for finding anything later on. This tool helps with that. It will offer to rename and move files to a specified folder, and it even gives some filename suggestions by looking at the content and the pdf metadata. Paperboy keeps its file management dumb on purpose (no keeping files in a database or hidden library folder), so you can uninstall it at any time and your files will remain perfectly accessible. Any pointers or help with regards to generate .deb, .rpm, AUR PKGBUILD, etc is appreciated. Ideally this could be mostly automated in CI, in the end Paperboy is just a single binary with a dependency or two. How do other packages do it? If you got a good example or link, open a GitHub issue! Make sure you have poppler installed, which will provide both pdftotext and pdfinfo. -
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Partito Pirata
sourcecode of the Partito Pirata project
This project is related to the Partito Pirata source code issueHere we host the development and sharing of the source code of the production into the Partito Pirata project. Every single bit in terms of information and source code will be available here for free -
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Plutus
The Plutus language implementation and tools
Plutus is the smart contract development framework for the Cardano blockchain, created using Haskell. It provides the core infrastructure for writing, testing, and deploying secure, deterministic smart contracts on the Cardano platform. Plutus includes a custom functional language (Plutus Core), a higher-level embedded DSL (Plutus Tx) for writing contracts in Haskell, and an off-chain infrastructure for managing interactions. It ensures strong correctness guarantees through formal verification and functional programming paradigms. -
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Polysemy
Higher-order, no-boilerplate monads
Polysemy is a high-performance, zero-boilerplate effect system for Haskell, designed to simplify the handling of side effects in functional programs. Unlike traditional monad transformer stacks, Polysemy uses a modern approach based on freer monads and interpreters, allowing developers to define, compose, and interpret effects in a more modular and testable way. It aims to offer both flexibility and performance without sacrificing type safety or expressiveness. -
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PortFusion
Distributed reverse / forward proxy and tunneling solution for TCP.
PortFusion is a minimalistic, cross-platform, transport-layer distributed reverse / forward proxy for TCP written in Haskell + LLVM and released under GPLv3. A single package that makes the most of each platform by tapping into their unique capabilities, combining this power with an intuitive interface, beautiful design and Haskell's excellent support for unprecedented levels of concurrency and parallelism. It strives for the smallest source code size (< 500 lines) while delivering maximum throughput with near zero overhead. -
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Power Systems
Power system analysis software
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Procreator is a framework for genetic programming written in Haskell. Procreator generates fully typed programs. This will allow for more effective crossover and for better compilation of the generated programs.
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The aim of QuantHas is to produce a port of the QuantLib C++ project for quantitative finance in the Haskell functional programming language. please visit our project home page for more details.
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Queryparser
Parsing and analysis of Vertica, Hive, and Presto SQL
Queryparser is Uber’s open source Haskell library for parsing and analyzing SQL queries written in different dialects (Vertica, Hive, Presto). It creates a unified AST and supports name resolution using catalog metadata, enabling large-scale query analysis for lineage detection, analytics, and tooling. The parsing logic produces an AST with table and column identifiers that are "raw" or optionally qualified. Frequently, it is desirable to convert the AST over raw names to an AST over resolved names, where identifiers are fully qualified. This transformation is called "name resolution" or simply "resolution". It requires as input the full list of columns in every table and the full list of tables in every schema, otherwise known as "catalog information". The parsing logic produces an AST with table and column identifiers that are "raw" or optionally qualified. -
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Random Password Generator written in Haskell. It provides easy command-line interface for generating passwords. Options include: number of passwords, random password length, allowed characters.
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Reflex
Interactive programs without callbacks or side-effects
Reflex apps automatically react to changing data. This keeps every interaction current, accurately representing the relationship between your data and the real world. Reflex components are modular and reusable. If your requirements change, your app can quickly and easily be reworked. The modularity of Reflex lets you iterate quickly, without wasting code. Reflex has been built to seamlessly support interfaces on desktop, mobile, web, and other platforms, all in Haskell. Regardless of your platform needs, Reflex lets you take your team and your code with you. Reflex is the key to writing self-updating user interfaces. Develop efficiently no matter how many times you pivot. One team, one code base, every platform. You don’t have to choose between building quickly or sustainably anymore. Reflex-FRP allows you to write production quality code from the get-go, with less technical debt.
