Apple TextEdit is a text editor program and an open-source word processor too, which is first used in NeXTSTEP and OPENSTEP, but now integrated in most recent versions of Mac OS X. It is also considered a GNUstep application for other operating systems that are Unix based, like Linux computers. This program is operated by Advanced Typography by Apple so expect several advanced typography related features. The main function of this software is to read and write documents in plain text, HTML formats, Rich Text Format, and Rich Text Format Directory. It can also open Simple Text files but does not have the capability to save documents of that format. Mac OS X version 10.3 supports Microsoft Word documents, while Mac OS X version 10.4 can open and save Word documents in XML file. Mac OS X version 10.5 is able to read and write Office Open XML as well as OpenDocument Text. Features included on TextEdit are formatted text support, addition of graphics, animations and other multi-media contents, automatic adjustment of letter spacing, as well as reading and writing support of character encodings.
Notepad is a basic text editor used to create plain documents. It is commonly used to view or edit text (.txt) files, and a simple tool for creating Web pages, and supports only the basic formatting in HTML documents. It also has a simple built-in logging function. Each time a file that initializes with .log is opened, the program inserts a text timestamp on the last line of the file. It accepts text from the Windows clipboard. This is helpful in stripping embedded font type and style codes from formatted text, such as when copying text from a Web page and pasting into an email message or other “What You See Is What You Get†text editor. The formatted text is temporarily pasted into Notepad, and then immediately copied again in stripped format to be pasted into the other program. Simple text editors like Notepad may be utilized to change text with markup, such as HTML. Early versions of Notepad offered only the most basic functions, such as finding text. Newer versions of Windows include an updated version of Notepad with a search and replace function (Ctrl + H), as well as Ctrl + F for search and similar keyboard shortcuts. It makes use of a built-in window class named edit. In older versions such as Windows 95, Windows 98, Windows Me and Windows 3.1, there is a 64k limit on the size of the file being edited, an operating system limit of the EDIT class.