Open Source Haskell Scientific/Engineering Software

ImplicitCAD is a programmatic CAD program, implemented in Haskell. Unlike traditional CAD programs, programmatic CAD programs use text descriptions of objects, as in programming. Concepts like variables, control structures and abstraction are used, just as in programming. With the explosion of 3D printing, designing 3D objects has become an even more important problem. And it's a complicated one. We need to design complicated objects that precisely interface with each other. And often we don't want to just design a single object, but classes of objects, parameterized by variables. And we need to do this in collaboration. Generally, objects in programmatic CAD are built with Constructive Solid Geometry or CSG. Unions, intersections and differences of simpler shapes slowly build the object. ImplicitCAD supports all this and much more! For example, it provides rounded unions so that one can have smooth interfaces between objects.

The Archive of Formal Proofs is a collection of proof libraries, examples, and larger scientifc developments, mechanically checked in the theorem prover Isabelle. It is organized in the way of a scientific journal. Submissions are refereed.

Agda is a system for incrementally developing proofs and programs. This is the sourceforge project for the PREVIOUS Agda (Agda 1). A newer version of Agda (Agda 2) in beta testing is available from: http://wiki.portal.chalmers.se/agda/

Alga is a library for algebraic construction and manipulation of graphs in Haskell. See this Haskell Symposium paper and the corresponding talk for the motivation behind the library, the underlying theory and implementation details. We can give semantics to the constructors in terms of the pair (V, E) of graph vertices and edges. Alga can handle graphs comprising millions of vertices and billions of edges in a matter of seconds, which is fast enough for many applications. We believe there is a lot of potential for improving the performance of the library, and this is one of our top priorities. If you come across a performance issue when using the library, please let us know.

A command line tool that allows a semi-automated scientific articles management. It assumes an existence of a directory of a specific format in the file system. The tool interprets the data stored in the directory (called a repository), extend it via the usage of some automatic tools such as pdftotext, and search the text as well as some metadata.

BuddyScout is an interface between BuDDy (Binary Decision Diagram library) and GHC (Glasgow Haskell Compiler). It enables you to use the BDD library from within Haskell programs.

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

The Dolphin Project is intended to be a research project aggregating tools related to Open Source Satisfiability Solver tools and tools related to them like Bounded Model Checkers and Software Verifiers.

ElixirFM is a high-level implementation of Functional Arabic Morphology. The core of ElixirFM is written in Haskell, while interfaces in Python and Perl support lexicon editing and other interactions. http://github.com/otakar-smrz/elixir-fm

Encode Arabic provides tools for encoding and decoding Arabic in Haskell, Python, Perl, or LaTeX. Interprets the ArabTeX notation to generate original orthography or phonetic transcription. Supports Buckwalter and other romanizations. Converts legacy byte encodings into Unicode. http://github.com/otakar-smrz/encode-arabic

Functional Reactive VR is a library for developing dynamic, interactive Virtual Environments. The FRVR framework provides new and powerful tools for implementing the dynamics and interaction of Interactive Experiences.

The project is an implementation of DSP and related algorithms in the programming language Haskell.

Converts files from Garmin(R)'s IMG file format to GMAPI file format.

The Inverse Ocean Model (IOM) is a software system for developing customized data-assimilation systems for numerical ocean models. It has also been used with general purpose hydrodynamic and geodynamic models.

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.

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.

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.

A structured spreadsheet web interface for Neurophysiology data analysis. A new generation web interface for the analysis of scientific data with Neurophysiology as test subject built on JavaScript, R , PERL-CGI and AJAX.

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.

bignum is a Miranda library and BigFloat a Haskell type for dealing with infinite-precision values with all arithmetic and scientific functions. Unlike most long-precision calculation systems, it guarantees that every digit it returns is correct.

A set of command-line utilities for annotating and manipulating DNA sequences in FASTA format. Generate restriction fragments, ORF's, translations, reverse complement, etc. . - and tie it all together with Unix pipes for complete virtual cloning.

This will be a graph generator, generating lists of graphs satisfying given conditions (filters).

A tool written in Haskell to parse GDSII (Calma) binary files and print the GDSII structure out in a readable text format.

Proof Logic is a functional and equational logical framework for theorem proving based on Combinatory Logic and Lambda Calculus, whose expressions are both terms and proofs proving the equality between two terms.