Get Plain Text is a practical utility program to process text within Mac OS: It converts copied text into plain text.
Get Plain Text will convert any bit of text into plain text, no matter where you copied it from (a website, PDF document or elsewhere). You can activate the feature manually, or check “Automatically remove formatting” to make the app take care of it every time you copy something.
GNU GLOBAL is a source code tagging system that works the same way across diverse environments (emacs, vi, less, bash, web browser, etc). You can locate symbols in source files and move there easily.
It is useful for hacking a large project containing many sub-directories, many #ifdef and many main() functions. It is similar to ctags or etags but is different from them at the point of independence of any editor. It runs on a UNIX(POSIX) compatible operating system like GNU and BSD.
Pattern Digger finds and maintains a list of special annotations in source code or any other text file. It helps you to get a global overview of the remaining tasks, a summary of what need to be done in a file or project.
TaskAgent is a simple to-do list manager that saves its lists as plain text files. While Dropbox syncing is optional, the benefit is that you can edit your lists from outside the app using your favorite text editor and then sync any changes back into the app.
CriticMarkup is a way for authors and editors to track changes to documents in plain text. As with Markdown, small groups of distinctive characters allow you to highlight insertions, deletions, substitutions and comments, all without the overhead of heavy, proprietary office suites.
As well as a command line preprocessor, the CriticMarkup toolkit includes TextExpander snippets, Keyboard Maestro macros, OS X Services, plugins for BBEdit and Sublime Text, &c.