CodeIgniter for PayPal Payments Pro includes every API call available in PayPal's NVP documentation, as well as their Authentication and Permissions APIs. The controller includes "template" methods for every call which include all the possible parameters which can be passed into each particular call. All you have to do is fill the blank parameters in the array templates and pass the results into the library method. An array will be returned with all of the response fields from PayPal, as well as a few extra fields for troubleshooting purposes.
FileMaker Custom Functions for PayPal APIs provides a collection of custom functions for FileMaker Pro which provide direct access to PayPal's Web service APIs using nothing more than simple functions inside FileMaker calculations, just like any other FileMaker function. When the solution file starts, it loads a number of functions into your FileMaker system; you'll find them under External Functions from any calculation dialog. There are matching functions for each API call which PayPal provides in their NVP Web services. You simply choose a function and populate its parameters using your FileMaker data. The function will handle all communication with PayPal and return all response data back to the solution file in global fields so they're available for you to populate your own FileMaker tables/layouts accordingly.
Emergent is a neural network simulator with a built-in scripting language which allows for the creation and analysis of complex, sophisticated models of the brain in the world. Networks and all of their state variables are visually inspected in 3D, allowing quick "visual regression" of network dynamics and robot behavior. Emergent is a direct descendant of the PDP and PDP++ neural network packages.
Zurmo provides an easy-to-use, easy-to-customize CRM application which can be adapted to any business use case. The authors have taken special care to think through many different use cases and have designed a system which provides a high degree of flexibility, covering a wide variety of cases out of the box.
BitNami LimeSurvey Stack Native Installer is an easy-to-install distribution of the LimeSurvey application. It includes pre-configured, ready-to-run versions of Apache, MySQL, PHP, and phpMyAdmin so users can get a LimeSurvey installation up and running in minutes after answering a few questions. Windows, Linux, Linux 64, Mac OS X, and Unix operating systems are supported. LimeSurvey allows users to quickly create intuitive, powerful, online question-and-answer surveys that can work for tens to thousands of participants without much effort. The survey software itself is self-guiding for the respondents who are participating.
getxbook is a collection of tools to download books from websites. There are tools to download from Google Books' "book preview", Amazon's "look inside the book", and Barnes and Noble's "book viewer". There is an optional GUI written in Tcl/Tk, and some shell scripts using OCR to create plain text or searchable PDFs and DjVu files from the downloaded books.