RSAT is the modern spiritual successor to the Resource Kit. It provides the consoles and command-line tools needed to manage roles and features from a remote computer or your local server. How to get it:

is the industry gold standard. Most of the original "Resource Kit" utilities for monitoring processes and disk activity evolved into these apps. Top Tools: Process Explorer: A massive upgrade over Task Manager. Process Monitor: For real-time file system and registry activity. For advanced system event logging. You can find the latest version on the official Microsoft Learn Sysinternals page 3. File Server Resource Manager (FSRM)

Microsoft shifted away from releasing standalone "Resource Kits" after the Windows Server 2003 era. While you can sometimes find old kits on third-party sites, they often suffer from compatibility issues on modern 64-bit systems.