ProtoMon is a server monitoring tool that will automatically check your servers and notify you when some of them are down.

The following network protocols are supported:
- ICMP (Ping)
- HTTP(S)
- FTP(S)
- POP3(S)
- IMAP(S)
- SMTP(S)
- Telnet (SSH)
- SFTP
- Custom TCP connection to any port

If a server is not avaliable, the program will perform any of these actions:
- display a pop-up notification window
- play a sound
- send a notification e-mail message

Also ProtoMon can do some additional actions, such as sending a test e-mail message while checking an SMTP server, downloading a file while checking an FTP or SFTP server, executing a script on the remote server via Telnet or SSH, etc.