Alpha is a text editor, just as powerful and configurable as [Emacs], but having Tcl as extension language instead of [lisp]!  90 percent of Alpha's functionality is written in Tcl, so it is very easy to tweak it and extend it. The AlphaTcl library http://alphatcl.sf.net) is nearly 20000 lines of Tcl code, full of gems and useful tricks.

| What:| Alpha|
| Where:| http://www.maths.mq.edu.au/~steffen/Alpha/AlphaX/ <<br>> http://alphatcl.sourceforge.net <<br>> http://sourceforge.net/projects/alphatcl|
| Description:| Alpha is a Macintosh shareware Tcl programmable editor. AlphaX requires [MacOS X] 10.2.|
| Updated:| 04/2005|
|Contact:| http://lists.sourceforge.net/lists/listinfo/alphatcl-users|

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See also [AlphaTk], [Vince Darley]'s reimplementation in [Tk] --- it runs in [unix] and [windows] too!
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Joackim Kock: "Alpha's [Tcl] mode is really nice with [syntax] colouring, automatic indentation, [comment] handling, keyword and variable completion, templates insertion, many navigation features (e.g. Cmd-double-click on a proc name and be taken to the place where that proc is defined), and seamless integration with the built-in Tcl interpreter (or an external one if you prefer).  . . . 


Alpha would benefit from getting new Tcl-competent users.  The development of Alpha seems to have stagnated a little bit, but each time there is some feedback and suggestions, there is a burst in development activity..."

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[https://alphacocoa.sourceforge.io/%|%AlphaCocoa]: The AlphaCocoa project is a complete rewrite of Alpha for [MacOS] X, based on the [Cocoa] framework.  It comes with an entirely revised and improved Tcl library of packages. 

[https://alphacocoa.sourceforge.io/Images/screenshot_modes_popup.png]

[https://alphacocoa.sourceforge.io/Images/screenshot_R_console.png]

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