Tools

PHP debugging
http://netbeans.org/kb/docs/php/debugging.html
https://chrome.google.com/webstore/detail/nfhmhhlpfleoednkpnnnkolmclajemef?hl=en-US#

Reporting PHP to Excel
http://www.the-art-of-web.com/php/dataexport/
http://phpexcel.codeplex.com/
http://code.google.com/p/php-excel/
http://sourceforge.net/projects/psxlsgen/

Reporting PHP to PDF
http://sourceforge.net/projects/html2fpdf/
http://sourceforge.net/projects/web-erp/
http://sourceforge.net/projects/phphtml2pdf/
http://www.devshed.com/c/a/PHP/PDF-Generation-With-PHP/
http://stackoverflow.com/questions/560583/which-is-the-best-pdf-library-for-php
http://framework.zend.com/manual/en/zend.pdf.html
http://www.setasign.de/
http://www.tcpdf.org/
http://www.ros.co.nz/pdf/
http://fpdf.org
http://code.google.com/p/dompdf/

Flex developer tools
google key word -> flex developer tool list
http://www.riaspace.com/2009/01/flex-developer-tools-ides/
http://www.noupe.com/tutorial/flex-developers-toolbox-free-components-themes-and-tutorials.html
http://seantheflexguy.com/blog/2007/08/21/list-of-31-flex-apis-libraries-components-and-tools/
http://marxsoftware.blogspot.com/2009/01/must-have-flex-development-tools-sans.html
http://corlan.org/flex-frameworks/