perl: The most exciting utility language to be developed for more than a decade! ● A systems administators dream, enabling complex operations to be performed with ease. ● Built-in security features make a welcome change from the usual security leaks found in other various shells in use. ● The most accepted replacement for ed, sed, [eg]rep, awk and shell scripts ● Accomplishes jobs with ease that were only possible before with great difficulty with C language or UNIX shells ● Available for UNIX, DOS, NT, MAC and a host of others!
tcl/tk: tcl is a tool and command language, while tk is a toolkit for X-Windows ● Allows complex screens & user interfaces to be developed quickly without being an X-Windows expert! ● Provides a simple and powerful programming environment for writing windowing applications.