libffi is a library that really only provides the lowest, machine dependent layer of a fully featured foreign function interface. A layer must exist above libffi that handles type conversions for values passed between the two languages. ffi stands for Foreign Function Interface. A foreign function interface is the popular name for the interface that allows code written in one language to call code written in another language.
SigLab is a calculator designed for working on signals. You can use it to load, save, or generate signals, and do various operations on and between signals (addition, log, abs, sin, filtering, convolution, fft, correlation, etc.). Signal parts are constantly displayed. SigLab was designed to be able to handle the results of simulations or measurements. It can handle signals with millions of points, keeping in memory a small piece of each signal. To keep good performance, it caches in memory signal portions. SigLab was specifically designed for Ptolemy users. It will start at the end of a simulation and show all asked signals.
The SFL (Standard Function Library) is written in ANSI C and has been ported to MS-DOS, Windows, OS/2, Linux and other Unix systems (IBM AIX, SunOS, HP/UX, Solaris, NetBSD, FreeBSD, SCO OpenServer, Digital UNIX), and Digital OpenVMS. It provides about 450 functions that cover these areas: compression, encryption, and encoding, datatype conversion and formatting, dates, times, and calendars, directory and environment access, user and process groups, inverted bitmap indices, symbol tables, error message files, configuration files, string manipulation and searching, file access, Internet socket access, Internet programming (MIME, CGI), SMTP (e-mail) access, server (batch) programming, and program tracing.
The EJBWizard is a graphical tool written in Java to assist in the rapid prototyping on Enterprise Java Beans (EJBs) and JavaServer Pages (JSPs) that manipulate them. Originally designed to work with the JOnAS EJB server system, the EJBWizard has been expanded to create beans suitable for use with virtually any EJB server system.
AMC is a programmable compiler/preprocessor. It has a built-in programming language called CGL (Code Generation Language) that lets you add new syntactical elements to the source files that AMC processes. In addition, AMC has a module structure reminescent of the UCSD p-System compiler. AMC comes with a default package that adds a dynamic form of OOP to C.
Forms for Metadot Web Portal is a web based forms package for the metadot portal. From your browser you can define a form with checkboxes, radio buttons, etc. Validate minimum length, max size, or against a regexp, attach "help" to field, and usual forms package type stuff. Users can then use the web to enter data according to your forms. It works within the metadot portal environment (nice, flexible portal - gpl mod_perl mysql).