WinSCP (short for Windows Secure Copy) is a free, open-source (S)FTP, WebDAV, Amazon S3 and SCP client for Windows, developed by Martin Přikryl from Czech Republic in 2000. It's mainly used to securely transfer files between local and remote computers, but it also provides features as a simple file manager and file synchronizer. In order to realize secure file transfer, it uses Secure Shell (SSH) to establish connections and provides support for SCP and SFTP (SSH File Transfer Protocol).

XOIC is another foolproof DoS/DDoS attack launching tool (euphemistically called server stress testing tool) for Windows. It executes (D)DoS attacks to the target IP Address based on the port and protocol selected by user. Its developer claims that XOIC is more powerful than LOIC in many ways.

LOIC (short for Low Orbit Ion Cannon) is a free and open-source network/website stress testing tool initially developed by Praetox Technologies (currently maintained by the open source community) with C# in 2014. It's made for educational purposes only (that's to say, you should not use this software for illegal or unethical purposes, including activities that give rise to criminal or civil liability), and intended to help server owners develop a "hacker defense" attitude.

gEDA is a free, open-source and cross-platform (but mainly designed for Linux) EDA project. It provides a mature electronic design solution, including schematic diagram capture, property management, BOM (Bill of Materials) generation, 20 grid tables, analog and digital simulation, and printed circuit board layout (PCB suite, free software application).

Some users would say "Who's going to adapt to some dedicated tool to share files within a LAN now? Any instant messaging software can easily achieve the file sharing purpose". However, considering the work efficiency, the file upload/download speed of using a dedicated LAN file-sharing tool can reach the maximum speed that a router can handle in a LAN office environment. Otherwise, you will not only occupy the important Internet bandwidth resources, but also upload and download files at a very limited speed!