Crimson Editor is not only fast in loading time, but also small in size (so small that it can be copied in one floppy disk). While it can serve as a good replacement for Notepad, it also offers many powerful features for programming languages such as HTML, C/C++, Perl and Java. Syntax Highlighting for HTML, C/C++, Perl, Java, Matlab and LaTeX. Also, it can be extended for other programming languages based on custom syntax files. Other features include undo/redo, user tools, macros, spell checker and more.