Obviously you need to use a few more programs, there are no Java applets anywhere on the forums. Unless you mean JavaScript, which has no relation to Java whatsoever (the name was a marketing gimmick, in fact).
[url]www.php.net[/url] and [url]www.mysql.com[/url] are used in the majority of forum software, including this one, for all server-side operations. JavaScript also plays a role in spicing up the client-side of things, although its use is entirely optional (not all users have JavaScript turned on for security reasons).
I assume you want programming program suggestions.
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http://labs.msdn.microsoft.com/express/ Free version of Visual Studio 2005 Express Edition components.
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http://www.bloodshed.net/ Dev-C++, a popular free IDE for mingw (a free C++ compiler).
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http://nsis.sourceforge.net/ NSIS, a free scripting language by the makers of Winamp. It allows you to create installers with minimal effort... the nicest feature, I think, is that it writes most of the uninstaller for you once you tell it what files it'll install.
I think that's it. I do most of my non-C++ work in Notepad.
For graphic programs, there's the GIMP, Paint.NET, and Microsoft Expression Graphic Designer. You can look them up on your own. They're all free... I find them reasonable substitutions for Photoshop considering the price difference.
[url]www.irfanview.com[/url] is a very good image viewer and converter. It can open most images and even some other non-image formats. It also has some basic image filters and the like included. I often use this along with MS Paint if I need to directly modify/draw an image in some small way. For larger image projects I use the GIMP, although Photoshop users will likely be confused by its interface, the other two programs I mentioned are a closer match.