Gotcha is a library that wraps functions. Tools can use gotcha to install hooks into other libraries, for example putting a wrapper function around libc's malloc. It is similar to LD_PRELOAD, but operates via a programmable API.

hwloc provides a portable abstraction (across OS, versions, architectures, ...) of the hierarchical topology of modern architectures, including NUMA memory nodes, sockets, shared caches, cores and simultaneous multithreading. It also gathers various attributes such as cache and memory information. It primarily aims at helping high-performance computing applications with gathering information about the hardware so as to exploit it accordingly and efficiently.

hwloc may display the topology in multiple convenient formats. It also offers a powerful programming interface to gather information about the hardware, bind processes, and much more.

The Open MPI Project is an MPI-3 implementation that is developed and maintained by a consortium of academic, research, and industry partners. Open MPI is therefore able to combine the expertise, technologies, and resources from all across the High Performance Computing community in order to build the best MPI library available. Open MPI offers advantages for system and software vendors, application developers and computer science researchers.

MPICH is a high-performance and portable implementation of the Message Passing Interface (MPI) standard (MPI-1, MPI-2 and MPI-3). MPICH provides an MPI implementation that efficiently supports different computation and communication platforms including commodity clusters, high-speed networks (10 Gigabit Ethernet, InfiniBand, Myrinet, Quadrics), and proprietary high-end computing systems (Blue Gene, Cray). It enables research in MPI through a modular framework for other derived implementations.

hwloc provides a portable abstraction (across OS, versions, architectures, ...) of the hierarchical topology of modern architectures, including NUMA memory nodes, sockets, shared caches, cores and simultaneous multithreading. It also gathers various attributes such as cache and memory information. It primarily aims at helping high-performance computing applications with gathering information about the hardware so as to exploit it accordingly and efficiently.

hwloc may display the topology in multiple convenient formats. It also offers a powerful programming interface to gather information about the hardware, bind processes, and much more.

This package provides Zyn-Fusion user interface for zynaddsubfx.

GNU Mtools is a set of utilities for accessing MS-DOS disks from a GNU or Unix system. It supports long file names and multiple disk formats. It also supports some FAT-specific features such as volume labels and FAT-specific file attributes.

TomsFastMath is a large integer library written in portable ISO C. It is a port of LibTomMath with optional support for inline assembler multiplies.

MPFI is a portable C library for arbitrary-precision interval arithmetic, with intervals represented using MPFR reliable floating-point numbers. It's based on the GMP and GNU MPFR libraries.

The purpose of arbitrary-precision interval arithmetic is to get results that are both guaranteed, thanks to interval computation, and accurate, thanks to multiple-precision arithmetic.

The GMP library performs arbitrary-precision arithmetic on signed integers, rational numbers and floating point numbers. The precision is only limited by the available memory. The library is highly optimized, with a design focus on execution speed. It is aimed at use in, for example, cryptography and computational algebra.

The GMP library performs arbitrary-precision arithmetic on signed integers, rational numbers and floating point numbers. The precision is only limited by the available memory. The library is highly optimized, with a design focus on execution speed. It is aimed at use in, for example, cryptography and computational algebra.

iRRAM is a C++ package for error-free real arithmetic based on the concept of a Real-RAM. Its capabilities range from ordinary arithmetic over trigonometric functions to linear algebra and differential equations. A program using iRRAM is coded in ordinary C++, but may use a special class that behaves like real numbers without any error. Additionally, iRRAM uses the concept of multi-valued functions.

CLN is a C++ library for efficient computations with all kinds of numbers in arbitrary precision. It provides a rich set of number classes and elementary, logical and transcendental functions.

LibTomCrypt is a fairly comprehensive, modular and portable cryptographic toolkit that provides developers with a vast array of well known published block ciphers, one-way hash functions, chaining modes, pseudo-random number generators, public key cryptography and a plethora of other routines.

GNU MPC is a C library for performing arithmetic on complex numbers. It supports arbitrarily high precision and correctly rounds the results.

LibTomMath is a portable number theoretic multiple-precision integer library written entirely in C. It's designed to provide an API that is simple to work with that provides fairly efficient routines that build out of the box without configuration.

GNU MPFR is a C library for performing multiple-precision, floating-point computations with correct rounding.

This package supports both a double-double datatype (approx. 32 decimal digits) and a quad-double datatype (approx. 64 decimal digits). The computational library is written in C++. Both C++ and Fortran-90 high-level language interfaces are provided to permit one to convert an existing C++ or Fortran-90 program to use the library with only minor changes to the source code. In most cases only a few type statements and (for Fortran-90 programs) read/write statements need to be changed. PSLQ and numerical quadrature programs are included.

This package provides an LV2 plugin that allows for pattern-controlled MIDI amp & time stretching to produce shuffle / swing effects.

Key features include:

1. MIDI velocity amplification and timing manipulation plugin

2. Swing and shuffle rhythms

3. Pre-generator dynamics

4. Tempo rubato

5. Pattern (sliders) or shape-controlled

6. MIDI filters

7. Smart quantization

Power Tab Editor 2.0 is the successor to the famous original Power Tab Editor. It is compatible with Power Tab Editor 1.7 and Guitar Pro.

Curseradio is a Curses-based radio player that uses a tune-in sender list from http://opml.radiotime.com.

Pure Data (aka Pd) is a visual programming language. Pd enables musicians, visual artists, performers, researchers, and developers to create software graphically, without writing lines of code. Pd is used to process and generate sound, video, 2D/3D graphics, and interface sensors, input devices, and MIDI. Pd can easily work over local and remote networks to integrate wearable technology, motor systems, lighting rigs, and other equipment. Pd is suitable for learning basic multimedia processing and visual programming methods as well as for realizing complex systems for large-scale projects.

Bristol is an emulation package for a number of different classic synthesizers including additive and subtractive and a few organs. The application consists of the engine, which is called bristol, and its own GUI library called brighton that represents all the emulations. There are currently more than twenty different emulations; each does sound different although the author maintains that the quality and accuracy of each emulation is subjective.

mod-host is an LV2 plugin host for JACK, controllable via socket or command line.