http://www.UltraEdit.com/downloads/UltraEdit_download.html

UltraEdit is the ideal text, HTML and hex editor, and an advanced PHP, Perl, Java and JavaScript editor for programmers. UltraEdit is also an XML editor including a tree-style XML parser.  

64-bit file handling (for files of 4+ GB) on both 32-/64-bit Windows platforms (Win 2000 and later).

There are many advanced features that include syntax highlighting/coloring for many languages, as well as Code folding, Brace Matching, Hex Editing, Style Builder and Column/Block editing.