Sigma's Additions is an AppleScript scripting addition. Its intention was as a replacement for Sändi's Additions. It provides the 'type text' Event.

This is the third release version of the Texx scripting interpreter. This scripting language is an attempt to implement a version of the Rexx interpreter that is commonly used on IBM's VM/CMS mainframe  operating system.  This version...

StarLogo is a programmable modeling environment for exploring the behaviors of decentralized systems, such as bird flocks, traffic jams, and ant colonies. It is designed especially for use by students. In decentralized systems, orderly patterns...

Smile is an AppleScript IDE. It provides facilities for script editing, debugging, and testing. The debugger, which provides line-by-line debugging and access to Apple Event codes, is possibly Smile's most powerful feature. The text editer,...

Pepper is a powerful new text editor for MacOS. It is a descendant of Pe for BeOS, but it is more than just a straight port since it is a real MacOS program offering a lot of new features. Pepper is Appearance savvy and tries to offer a consistent...

OmniScript is a general purpose script language with the following features: Complete control structure include if and else statements and do loops. Use of string, integer or floating point variables. Subscripts can also be used. A display...

This is an English version of the mi text editor by the same author. This was released without English documentation.

MacPython integrates Python into the Macintosh environment. This means that you can create Python scripts and run these as easily as you can use other documents. You can use the Integrated Development Environment (IDE), which includes an editor and...

JB-Prolog 2.1 is a very powerful Prolog interpreter. It is currently available for the MacIntosh, where it comes with an interface toolkit and a programming environment. Some of its key features are: Bignums: JB-Prolog 2.1 integers can be...

The Mac's ease of use has always had an invisible price: creating software with a good user interface is complicated. Although AppleScript's relative simplicity brought programming within reach of ordinary users, the program's built-in...

MacForth Plus on three floppy disks.  

The main window for the program contains three sections:  The Console, the Memory, and the Registers.  The Memory is a scrolling list that displays 1024 memory locations, numbered from 0 to 1023.  Each location contains a 16-bit...

xModels-2D and xModels-3D are geometric modeling programs, designed to illustrate the basics ideas of geometric transformations, hierarchical computer graphics modeling, and animation.  Images are described in a "scene description...

C-FORTH: a portable, C-coded figFORTH interpreter. Written by Allan Pratt; completed April 1985. This is a FORTH interpreter written entirely in portable C and FORTH. It requires nothing more than a decent C compiler to use [Aztec C in this...

MiniAda is a small educational compiler. Documentation was, unfortunately, only made available in printed form.

This is a compiler/interpreter for a part of the Ada language, namely the "Pascal subset" plus the Ada tasking support. It is not intended ever to be a full Ada compiler, rather a vehicle for teaching, learning, and experimenting with...

I-APL is designed for educational use. It is primarily a learning tool. It is a complete APL and conforms to the International Standards Organisation standard for APL (which is also expected to become a British Standard). Its execution speed...

This is an experimental port of the NYU Ada/Ed translator/interpreter. It includes a nice editor and environment around the original, however they do not conform to the Macintosh Interface Guidelines. Despite this version having a couple problems,...

GAL-GEM is a complete machine emulator for the GAL (Generic Assembly Language) and GEM (GEneric Machine) computation models, as described in “Computer organization: a top down approach” by Greg W. Scragg ... GEM 1.0 accepts GAL...

IcePick is MacApp view resource editor and interface development environment. With IcePick, developers can create their MacApp resources visually, test them in the IcePick environment, and generate Rez compatible textual descriptions of those...