NetCrunch Tools is a completely free toolkit for network professionals, featuring Ping, Traceroute, Wake OnLAN, DNS Info, Who Is, Ping Scanner, Service Scanner, Open TCP Port Scanner, SNMP Scanner, DNS Audit and Mac Resolver in one.
License: Freeware
OS Support: WinXP, Windows2003, Windows2000, Win Vista

Proxy Log Explorer is the fastest and most powerful analysis application for monitoring the efficiency corporate Internet usage of your Proxy server This Proxy Log Explorer creates dynamic reports on-the-fly.
License: Shareware
OS Support: WinXP, Windows2003, Windows2000, Win Vista

Userbooster Light is an universal LDAP client providing system administrators with all they need for managing directory data.
License: Shareware
OS Support: WinXP, Windows2003, Windows2000, Win Vista

Web Log Explorer Lite is freeware a powerful log analyzer generates interactive reports on-the-fly It allows you to dig as deep into your log files as you need to.
License: Freeware
OS Support: WinXP, Windows2003, Windows2000, Win Vista

The program generates HTML-based reports with tables and charts from raw Windows Media Services log files Highly detailed and easily configurable reports with tables and charts output to screen, ftp, file directories or email.
License: Shareware
OS Support: WinXP, Windows2003, Windows2000, Win Vista

LepideAuditor Freeware creates an audit report to keep track of all changes made in Active Directory, Group Policies, and Exchange Server The administrator can filter this report to extract the required information about a specific change.
License: Freeware
OS Support: WinXP, Windows2003, Windows2000, Win Vista, Win98