Software
CMD++
CMD++ is a command line program, which was devoloped as alternative to the Windows (R) console.
Hoek's Tools
Hoek’s Tools is a vast collection of portable utilities for the management, diagnosis and repairing of computer problems, recover lost or deleted files or cracking passwords. There are literally hundreds of utilities.
Mohawk Voice
Mohawk Voice is a low resource, high quality VoIP program which is free to download and use.