Free in multiple documents software for windows

Multiple Processor Monitor is a free widget that will monitor the processor activity of multiple CPU/core systems. It will monitor up to four CPUs.

A very light-weight (1.47MB), Opera-like web browser with a multiple document interface (MDI) and the Internet Explorer engine.

IntelliEdit is a Rich Text Editor that has smart autocompletion and will autocomplete words, phrases and will auto-expand shorthands.
The program can even learn new words and phrase while typing. IntelliEdit can tremendously boost your typing speed.
IntelliEdit is based on a tab-page MDI interface. You can create, edit and print multiple RTF documents conveniently in IntelliEdit. IntelliEdit is slim in size and quick to load.
Main features:
File
- New: create a new document
- Open: open an existing document
- Close: close the active document
- Save: save the active document
- Save As: save the active document with a new name
- Print: print the active document
Edit
- Cut: cut the selected text into clipboard
- Copy: copy the selected text into clipboard
- Paste: paste text from clipboard
- Find: find a specified string in active document
- Find Next: find the next occurrence of a specified string in active document
- Replace: replace text in the active document
View
- Toolbar: toggle visibility of the toolbar
- Status bar: toggle visibility of the status bar
- Tab bar: toggle visibility of the tab bar
Format
- Font: change font of the selected text
Help
- Smart Autocompletion: manual on smart autocompletion
- Feedback: write feedback to author
- FlashPeak Website: visit FlashPeak website
- Online forum: visit FlashPeak online forum
- About: about intelliedit

Key Features:
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 its 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.