The #Smalltalk compiler implements Smalltalk to run natively on the .NET framework. The #Smalltalk compiler allows you to use classes from ordinary .NET programs. In fact, many of the standard ANSI Smalltalk classes provided by #Smalltalk are just wrappers around standard .NET classes. For example, the OrderedCollection class is a wrapper around the ArrayList provided by .NET.
AIDA/Web is a Smalltalk web application framework for building complex web applications with integrated Ajax support, rich collection of web components to build web pages programatically, MVC-like separation of presentation from domain, REST-like nice looking and bookmarkable url links, with integrated session and security management, a Swazoo web server and many more.
With ScalaTest, you can test either Scala or Java code. By integrating with popular tools such as JUnit, TestNG, Ant, and Maven, ScalaTest makes it easy to take your testing to a higher, more productive level in new or existing Scala or Java projects.
Seaside provides a layered set of abstractions over HTTP and HTML that let you build highly interactive web applications quickly, reusably and maintainably. It is based on Smalltalk, a proven and robust language that is implemented by different vendors.
Squeak is a modern, open source full-featured implementation of the powerful Smalltalk programming language and environment. Squeak is highly-portable - even its virtual machine is written entirely in Smalltalk making it easy to debug, analyze, and change. Squeak is the vehicle for a wide range of projects from multimedia applications, educational platforms to commercial web application development.