(Assuming you are working on Windows.) I am using UltraEdit to write, test, update and debug programs directly on my servers (it has an efficient FTP function with which you save your changes directly on the server). Ultraedit is a shareware, though (we have a 50-user site licence where I work). Notepad++ is freeware and can also do that provided you download an additional plugin, and other free editors have the same capability. Add to that a telnet client (putty, for example, works also on secured connections) to launch compiles and runs, and you're all set.