PhpStorm & Web Storm 2.0 (Q4 2010) 
- PHP
- "Any framework" support mechanism via ability to supply extensive metadata about autoload & magic infrastructure

- Zend framework support (zendtool, generators, specific navigations)

- Zend debugger support

- Refactoring: Smart introduce field
/ constant , inline variable , safe delete .
- Advanced code inspection

- full fledged PHP namespace support
- CSS
- LESS support

- SASS 3 support

- Language Injection
- New editor of injected fragments

- Version control support
- New DVCS UI (Git, etc) with easy multiple repository branch switching, built-in log views and integrated cherrypicking, etc.

- Softwrap in code editor
, spellchecking an completion in all controls (i.e. commit dialog) 
- Mercurial support

- Other
- Streamlined UI: more compact layout, better indication, better blending into OS style.
- RelaxNG support

- Under consideration
- Flex (advanced coding assistance for ActionScript, MXML, code completion, inspections, etc)

- Property files / Freemarker / Velocity templates recognition

PhpStorm & Web Storm 1.0 (Q2 2010) 
- HTML/XHTML/XML/XSLT/XPATH

- JavaScript (laguage standard 1.6 with partial 1.7)
- Editing (syntax, code completion, code inspections, etc.)

- Refactoring

- Go to symbol, declaration

- Structure view

- Advanced support for frameworks (JSON, DoJo, JSDoc, jQuery, Prototype)
(check FAQ on other framework support)
- CSS

- PHP
- full 5.3 syntax support

- scope-aware code completion

- PHP refactorings: rename, introduce variable.
- advanced code inspections (visibility, type checking, etc)

- Language injection - SQL in PHP
, RegExp in PHP 
- support for any type of outer language - HTML, CSS, XML, SQL, etc..

- Frameworks & libs: Smarty
(check FAQ on other framework support)
- SQL
- syntax and error highlighting

- keywords, table and column names completion

- SQL Console

- generic SQL (SQL-92)

- MySQL

- SQLite

- Spell Checker

- FTP/SFTP sync

- XSLT
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