sharp-Smalltalk compiler implements Smalltalk to run natively on .NET framework, allows using classes from normal .NET programs; class library is mostly compatible with ANSI Smalltalk. [Open Software License]

Makes Ambrai Smalltalk, rapid application development platform to make new, or script extant, Mac OS X programs. Descriptions, documents, downloads, contact page.

Information on ObjectStudio, VisualWorks, VisualSmalltalk Enterprise; general Smalltalk information and success stories.

Smalltalk-based pure object-oriented environment to work with Mac OS X software. Innovations: high-level model for object manipulation, powerful object browser. Developed from scratch for the Objective-C object model. Highly integrated with Cocoa, nat...

Smalltalk application server, integrates well with Java, CORBA, relational databases.

Official Page at Smalltalk.org: very brief description, 8 links to varied resources. [Open Source, GPL]

Smalltalk-80 implementation, runs on most Unix types and most places with a POSIX compliant library, well suited to scripting tasks and headless processing. Part of GNU Project of Free Software Foundation, FSF. [Open source, GPL]

Project information: CVS, changes, downloads, mail list. [SourceForge.net]

To be a superset of Smalltalk-80 with optional variable typing, to allow typechecking of variables and static binding of methods. Typechecking helps ensure type-safe code. Static binding cuts runtime expense, for more speed.

A Smalltalk with deep Windows integration and a .NET interface. [Commercial]