Crimson is a free script editor for windows. This program is not only small in size and fast but also powerfull.

It can serve as a good replacement for paid script editor. Crimson Editor support highlighting for HTML, CSS, C++, PHP, Perl, Java, Matlab, Latex and others.

Others features include :

Edit multiple documents
- switch between documents using file selection tab.
- Ctrl+Tab brings the last accessed document to topmost.
- support window splitter to see different parts of a document.

Syntax highlighting
- configurable via custom syntax files.
- preconfigured for more than 100 computer languages.

Multi-level undo / redo
- all editing actions are recorded from the opening of a file.
- any document always can be undone to it's initial contents.
- unlimited undo and redo buffers.

Project management
- manage group of related files into one project.
- remote files also can be included in a project.

Directory tree view window
- click to open documents.
- filter to display only selected file class.

Find & Replace
- replace specified text one by one, or as a whole.
- support regular expression.

Column mode editing
- copy and paste rectangular selections.
- switch between column mode and line mode. (Alt+C)

Natural word wrapping
- word wrapping does not affect syntax highlighting.
- configurable wrapping indentation. (easer to understand the syntax)

Spell checker
- around 100000 words were added in the dictionary.
- users can register new words in their own dictionary. (InstallDir/user.dic)

User tools and macros
- execute external programs with proper arguments.
- compile, execute and test your code.
- ease your fingers with key stroke recording. (record & replay)

Edit remote files directly using built-in FTP client
- open, edit, and save documents in remote FTP servers.
- save account information (encoded) for automatic logon.

Print & Print preview
- configurable page header and footer.
- print with line numbers.
- print with syntax highlighting. (used in color printer)
- true type font selection for printer.

Other useful features
support Unicode & UTF-8 encoding, drag & drop text editing, single instance / multiple instances, ability to detect changed files, bookmark & go to, highlight active line, highlight matching pairs, multi-byte support with integrated IME (for eastern languages), auto indent, wheel mouse support, copy & paste, line numbers, configurable line spacing, option to save files in Unix format.