JavaSketch is an Eclipse plugin that is both a programmer's searchengine and code generation tool. It can find chains of Java API calls that produce a desired result and insert the appropriate code into the active Java editor.
xFloWS project aims to provide a graphical toolkit that enables users to create complex Web services by combining other existing Web services simply using drag and drop. xFloWS also includes a Web service searchengine and a code generator.
Frosttie (FROnt-end SchemaTron Text Internet Engine) takes XHTML pages and processes them with various user-definable filters such a W3C's WAI, Section 508 (US) web usability compliance, ad removal, etc. It can be used with zKnowMan.