Radish PHP

As in RAD-ish ... form generators, etc.

These are the odd ones that are do some nifty hack to bring productivity ... keep in back pocket ...

Free:
PHP SQL Parser for querying simple text files
http://gladius.sourceforge.net/index.php

PHP database-driven application builder:
http://www.nubuilder.com/

Some guy's neat lil' tool
http://pfp-studio.sourceforge.net/

Another form builder...

http://www.kevinburkholder.com/sw_formgen.php
http://www.formassembly.com/wForms/ 

Quick & Dirty WAMPP w/ some extra tools
http://www.easyphp.org/

PHP SQL generator
http://www.sqlmaestro.com/products/mysql/phpgenerator/

App Gini: free version / pay ver
http://www.bigprof.com/appgini/
http://www.bigprof.com/demo/index.php

phpMyEdit free version/pay version
http://platon.sk/projects/release_list_page.php?project_id=5 
http://www.php-form-generator.com/phpmyedit/generator.php
http://www.php-html-form.com/
( free version from http://php-form-generator.com/ )

TTSwiftCoder - MySQL PHP Generator ( online only )
http://www.turningturnip.co.uk/free-mysql-php-generator/

Easy PHP
http://www.easyphp.org/screenshots.php
comes with plugins for joomla, drupal, frameworks ..

Programming IDE's

Fully free:

http://netbeans.org/features/php/
(well-liked by people who've used Zend/Eclipse
(also does Ruby, Python, Javascript & Java ... )

http://devphp.sourceforge.net/
(lighter, does xdebug as well )

"Real Studio," claims it compiles PHP into machine code (not free...)
http://www.realsoftware.com/web/

(not free, form builder....)
http://www.hkvstore.com/phpmaker/