Below are some of the 3rd party command line apps I use frequently from TC/TCC command prompt.
- dig (part of the ISC BIND package) for name server debugging
- The Van Dyke Client Pack; provides unix-like scp ("vcp"), ssh ("vsh"), and sftp ("vsftp")
- WinRAR (includes "rar.exe" for use from the command line)
- WinZIP (command-line support add-on is available)
- gzip, tar, gawk, grep, SED, and various other GnuWin32 packages make unix users feel home at TCC prompt