Tcl (Tool Command Language) is an interpreted scripting language optimized for portability and embedding. It's usually used in unison with its companion Tk GUI toolkit. All language operations are commands in prefix notation, and strings are used as most basic data construct, which both allow for variadic and dynamic uses. TclOO adds object-oriented semantics.
Parrot is a parser toolkit and virtual machine optimized for dynamic and scripting languages. It was designed for Perl6 but supports Lua, Ruby, Python, Pascal, Tcl and Scheme implementations. The Parrot runtime is register-based, garbage-collected, provides Unicode-aware strings, polymorphic object containers, allows dynamic opcodes, and its bytecode is commonly compiled from PIR (Parrot Intermediate Language), PASM (Parrot Assembly), or NQP (Not Quite Perl).
Joy of text is text editor, which includes a powerful ECCE-like scripting language for system tool integration and reusing any machine-readable input. It recovers easily from crashes, can interface with helper and utility applications, provides many default library commands, macro-scriptability, debugging, includes spell checking, binary conversion routines (for office documents or pdf files), enables tabular text editing, and can deal well with larger file sizes.