Jtalk is an implementation of the Smalltalk-80 language. It allows developers to write client-side heavy web applications in Smalltalk. Jtalk includes an integrated development environment with a class browser, workspace and transcript. JTalk Server saves the current state to a database, so you can develop with JTalk anywhere you want. It is hosted on Google App Engine. You need to be logged in with your google-account to use JTalk Server.