Krumo is a debugging tool for PHP that is intended to replace print_r() and var_dump(), which display structured information about any PHP variable. It does the same job but presents the information beautified using CSS and DHTML.

Seagull is a mature OOP framework for building web, command line and GUI applications. Licensed under BSD, the project allows PHP developers to easily integrate and manage code resources, and build complex applications quickly. Many popular PHP applications are already seamlessly integrated within the project, as are various templating engines, testing tools and managed library code. If you’re a beginner, the framework provides a number of sample applications that can be customise

PEAR or PHP Extension and Application Repository is a code library for PHP that has served as the official php package repository since the project started in 1999. PEAR provides: a library of libraries for PHP development a code distribution and update system a model for writing php code community for php developers, in a mailing list and website

iTextSharp is a C# port of iText, a Pdf java library.

iText is a java library that contains classes to generate documents in the Portable Document Format (PDF), XML, HTML, and RTF.

Sarissa is a Javascript API which encapsulates XML functionality in browser-independent calls. Sarissa is an ECMAScript library acting as a cross-browser wrapper for native XML APIs. It offers various XML related goodies like Document instantiation, XML loading from URLs or strings, XSLT transformations, XPath queries etc and comes especially handy for people doing what is lately known as “AJAX” development. Supported browsers are Mozilla – Firefox and family, Internet Ex

Flickcurl is a C library for calling the Flickr Web service API. It handles the API signing, token management, and parameter encoding and decoding, resulting in C functions for the Web services APIs.

MooTools is a compact, modular, Object-Oriented javascript framework designed to make writing extensible and cross browser code easier and faster. Follows popular javascript library conventions Includes physics fx functionality for rich animation effects External Links Recent mootools bug (2/14/07)