NetSaint is a program that will monitor hosts and services on your network. It has the ability to email or page you when a problem arises and when a problem is resolved. NetSaint is written in C and is designed to run under Linux (and most other NIX variants) as a background process, intermittently running checks on various services that you specify. The actual service checks are performed by separate "plugin" programs which return the status of the checks to NetSaint. Several CGI programs are included with NetSaint in order to allow you to view the current service status, problem history, notification history, and log file via the web.

An equivalent of the Linux whois for windows. Compatible with RFC954, does not use recursion like its antecedent.

A Port Scanner, written and compiled in C for Linux. Also available for Windows. Allows you to scan certain host for open ports.

WWWFinger is a free finger gateway that does not require any other applications except a compatible system and a cgi-bin/cgi-win type access to a Web Server.

Expired Domains allows you to catch expired domains that are still listed on Yahoo, DMOZ and Looksmart. Every week thousands of domains expire or are put on-hold. Directories are slow in removing dead links, and it can take months before their database gets updated. E.D. checks link popularity on MSN and Alltheweb. Some extra features: collecting administrative email addresses; type-in domains generator using Overtures suggestion tool; and more.

zer0scan is a simple connect based port scanner with a gtk2 frontend.