XPHP is an IDE authoring tool for Windows that allows you to design, develop, test, debug and deploy PHP applications. [This project has been discontinued since 2005]
BESEN is an acronym for "Bero's EcmaScript Engine", and it is a complete ECMAScript Fifth Edition Implemention in Object Pascal, which is compilable with Delphi >=7 and FreePascal >= 2.5.1 (2.4.0 only inoffically). Moved to Google Code http://code.google.com/p/besen/
ESA Provides a wrapper around the .NET scripting engine which adds support for hosting the scripting engine in a seperate AppDomain, and includes a Design-time environment for applications.