So you don't need Eclipse, because it's just another dumb Java-Editor with some nice extras? No way!

Check it out for

Web Development with Perl, PHP, HTML, CSS support using:

• EPIC – Eclipse Perl Integration with Syntax Highlighting, On the fly syntax check (with annotation hover), Content assist (for lookup of Perl objects contents), Quick reference feature,outline view with used modules and subroutines and a Source formatter (pretty printer)...
• PHPEclipse http://sourceforge.net/projects/phpeclipse/ – the PHP/SQL/HTML Plugin for Eclipse
• FTP/WebDAV-Support the FTP and WebDAV target management support plugin enables you to define web- or ftp-servers that you can synchronize with – very great feature working similar to the CVS repository-synchronisation including the fancy-diff function window before moving files… actually the most handy file sync-tool I know
• Xored Key TruStudio for PHP and Python, with edit-time source code validation,session-level local and remote debugging,full DBG PHP debugger support,built-in FTP and WebDAV support,open source

XML Development

• XML Buddy for advanced XML coding, designing and testing… checkout the article Harness the power of XML with Eclipse

C++ coding using the standard CDT:

• CDT for Eclipse

Pascal Development

• Pasclipse – will add Pascal support to the exciting Eclipse Workbench (www.eclipse.org). The idea of this Eclipse Plug-in is to provide the possibility to integrate any command line based Pascal compiler and provide a pretty printer (source code formatter) – currently in Alpha state

Cobol

• Eclipse Cobol Subproject – currently only available as sourcecode

Database development

• JFaceDB with SQL syntax highlighting, Table names auto-completing, database structure browser, internationalization, The distribution comes with two predefined extension: one is for working with Oracle databases; the other allows you to export table structure through Hibernate.

anything else

• Colorer a syntax highlighting and text parsing plugin and handler for Apache (for publishing your source on the web/intranet) – already supporting 100+ languages and full extensible with powerful HRC format(XML, RE, context free grammas), allowing to support any language.