Free processing software for linux

Workorder Processing System allows you to quickly set up a work order/ticket tracking system for most service related businesses.
Workorder Processing System is capable of handling multiple branches, which allows all branches to run from one central server connected to the Internet.
Main features:
- Multi branch capable with central server
- Customer address database
- Customer work history
- Searchable ticket database
- Business appointment scheduler

SoundTouch Sound Processing Library is an open-source audio processing library for changing the Tempo, Pitch and Playback Rates of audio streams or files:
- Tempo (time-stretch): Changes the sound to play at faster or slower speed than original, without affecting the sound pitch.
- Pitch (key) : Changes the sound pitch or key, without affecting the sound tempo or speed.
- Playback Rate : Changes both the sound tempo and pitch, as if an LP disc was played at wrong RPM rate.
Main features:
- Easy-to-use implementation of time-stretch, pitch-shift and sample rate transposing routines.
- High-performance object-oriented C++ implementation.
- Full source codes available for both the SoundTouch library and the example application.
- Clear and easy-to-use programming interface via a single C++ class.
- Supported audio data format : 16Bit integer or 32bit floating point PCM mono/stereo
- Capable of real-time audio stream processing:
- input/output latency max. ~ 100 ms.
- Processing 44.1kHz/16bit stereo sound in realtime requires a 133 Mhz Intel Pentium processor or better.
- Platform-independent implementation: The SoundTouch library can be compiled for any processor and OS platform supporting GNU C compiler (gcc) or Visual Studio, for example Win32, Linux, AIX.
- Additional assembler-level and Intel-MMX instruction set optimizations for Intel x86 compatible processors (Win32 & Linux platforms), offering several times increase in the processing performance.
- Compiled executable binaries available for Windows.
Enhancements:
- Add features/limitations/changes here

Process Raw Images is a service menu for processing many raw images at once. Supports output to Jpeg, Png and Tiff.

bibEC Process Card is a multiple gateway credit card payment processor.
This class is meant to process credit card payments via one of multiple payment gateways that are supported.
Currently the class supports the following payment gateways: Plug and Pay, Authorize.net, ViaKlix, and paynet . Changing between payment gateways is mostly a matter of changing the class constructor parameter.
The class provides a payment gateway independent API with functions for:
- Logging the payment activity
- Set the payment gateway authentication credentials
- Set the paying customer details
- Set the ship to details
- Set the credit card details
- Set the valuta
- Specify the order details
- Submit the payment processing request and retrieving the results
The payment submission is done securely when possible using PHP SSL socket connections or the Curl extension for PHP or the Curl command line.

FlowDesigner is a free (GPL/LGPL) data flow oriented development environment. It can be used to build complex applications by combining small, reusable building blocks. In some ways, it is similar to both Simulink and LabView, but is hardly a clone of either.
FlowDesigner features a RAD GUI with a visual debugger. Although FlowDesigner can be used as a rapid prototyping tool, it can still be used for building real-time applications such as audio effects processing. Since FlowDesigner is not really an interpreted language, it can be quite fast.
It is written in C++ and features a plugin mechanism that allows plugins/toolboxes to be easiliy added.
Main features:
- Signal processing
- Audio processing (DSP)
- Vector quantization
- Neural network
- Fuzzy logic
- Real-time audio effect processing (pre-alpha)
- Linear algebra using LAPACK (pre-alpha)
- Octave plug-in (pre-alpha)
- Robotics

Libconfig is a configuration file processing library that saves you from having to write your own configuration parsers and routines.
This project supports callback functions, automatic variable assignment, and many different configuration file types such as Apache-like, Windows INI-like, and whitespace separated.
Configuration is processed in a logical manner: global configuration files, local configuration files, environment variables, and finally command line options.
Enhancements:
- This release adds functions to set a user-specified error string from callback handlers.
- It exposes functions to convert from a string to a specified type.
- The documentation has been slightly cleaned up.

Project Lancelot is a modular mailing list manager.
Far simpler and less feature-rich than the likes of Mailman, it is still quite easy to understand, to change, and to extend.
Project Lancelot is a work in progress and should not (yet) be used for serious applications.
Enhancements:
- This release adds automated bounce processing via VERP.

hYPerSonic is a program for building and manipulating signal processing pipelines from Python scripts. It is designed for real-time control. It includes objects for oscillators, filters, file IO, and soundcard and memory operations. It is low-level: every byte counts.

Just recently worked out how to call back into the python interpreter from the portaudio (v18) callback. This is primarily for OSX (and windows?) where the mutex performance was unacceptable. Unfortunately this callback style (so far) breaks all existing code (which is based on a main loop in python).

It is working currently only on Linux and OSX.