WinSCP
A free and open-source file manager, SSH file transfer protocol (SFTP), File Transfer Protocol (FTP), WebDAV, Amazon S3, and Secure Copy Protocol (SCP) client for Microsoft Windows. 

Putty
An SSH and telnet client, developed originally by Simon Tatham for the Windows platform. PuTTY is open source software that is available with source code and is developed and supported by a group of volunteers.

7-Zip
A free software with open source. The most of the code is under the GNU LGPL license. Some parts of the code are under the BSD 3-clause License. Also there is unRAR license restriction for some parts of the code. Read 7-Zip License information.

You can use 7-Zip on any computer, including a computer in a commercial organization. You don’t need to register or pay for 7-Zip.

NBTExplorer
A low-level graphical NBT data editor originally based on NBTedit. The key difference is NBTExplorer’s full support for Minecraft .mcr/.mca region files, a directory-tree interface for easily exploring multiple worlds, and support for the latest NBT standard. NBTExplorer is built on top of Substrate.
Great for reading Minecraft server log files.

VB-Cable
VB-CABLE is a virtual audio device working as virtual audio cable. All audio coming in the CABLE input is simply forwarded to the CABLE output.

CPU-Z
A freeware software developed by CPUID that provides detailed information about a computer’s processor, motherboard, memory, and graphics card. It is widely used by tech enthusiasts and hardware reviewers to monitor and diagnose computer hardware issues. CPU-Z is known for its accuracy, ease of use, and wide range of features, including the ability to validate a PC’s hardware, benchmark CPUs, and monitor memory modules. 

WSL
The Windows Subsystem for Linux (WSL) lets developers install a Linux distribution (such as Ubuntu, OpenSUSE, Kali, Debian, Arch Linux, etc) and use Linux applications, utilities, and Bash command-line tools directly on Windows, unmodified, without the overhead of a traditional virtual machine or dualboot setup.

Intel® Extreme Tuning Utility (Intel® XTU)
Used to overclock, monitor, and stress a system. This application is supported with unlocked processors (K- and X-series) only. Refer to “This download is valid for the product(s) listed below” section for supported processors list. WARNING: Please make sure your processor is supported before downloading the latest version of Intel® Extreme Tuning Utility (Intel® XTU). Older versions of Intel® XTU are no longer available for download.

Passmark
PassMark Software specializes in PC benchmarking and diagnostic tools to help users measure, compare, and troubleshoot their computer’s performance. Some of their well-known products include PerformanceTest, BurnInTest, MemTest86, and OSForensics.