FileZilla is a free, fast FTP and SFTP client for Windows with a lot of features. FileZilla Server is a reliable free FTP server and helps to quickly move files between your computer and Web server.
Tftpd32 is an easy-to-use TFTP server designed for Windows
Technitium MAC Address Changer
Technitium MAC Address Changer is a free tool that can change your Media Access Control (MAC) address. The tool can change any Ethernet NIC’s MAC address to a specific address or generate a random address.
(IPAM – IP Address Management Solution)
GestioIP is a relatively simple tool withpowerful network discovery tools and functions for easy tracking and mapping of your network, and even has a Search-Engine for making intuitive queries about network! On top of it all GestioIP is web-based which gives you a great deal of freedom in utilization and accessing crucial IPAM software, and even has some features for managing VLANs
Packet Tracer (Cisco)
Packet Tracer is a simulator software that simulate router, switch and other networking devices.Packet Tracer is developed by Cisco System for the practice of CCNA level exams such as IT Essentials, CCNA Routing and Switching, CCNA Security, Intro to Internet of Everything, and Mobility Fundamentals.