Text editing software for HTML and Java:
  TextPad web site

A slightly more advanced HTML editor:

  HTML Kit

Image editing software:
  Irfanview web site or Irfanview Austria web site

Paint.net web site

HTML help and validation software:

http://www.htmlhelp.com

http://validator.w3.org/
 

MakeTextPadDefaultInternetExplorerViewer.reg will do exactly what it says; It will make TextPad the default Internet Explorer viewer.

Here is what it contains:
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\View Source Editor\Editor Name]
@="C:\\Program Files\\TextPad 4\\TextPad.exe"

  MakeTextPadDefaultInternetExplorerViewer.reg

To make TextPad your default IE source viewer, simply click on the link above, and open the file.  Answer "Yes" to add the information to your registry.

Now when you View Source in IE it will use TextPad instead of notepad.

This only works if you installed TextPad in the default location of C:\Program Files\TextPad 4\TextPad.exe.

If you installed it somewhere else you will have to change the path in the MakeTextPadDefaultInternetExplorerViewer.reg file with an editor.

To return Notepad as your default IE source viewer, click on the link below, and open the file.  Answer "Yes" to add the information to your registry.

Here is what it contains:
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\View Source Editor\Editor Name]

  ReturnNotepadAsDefaultInternetExplorerViewer.reg