For people engaged in computer repair or system maintenance, a bootable Windows PE system is must-have. For them, using tools to slim and customize the original OS setup ISO as needed is the best option. And for those users who just occasionally need to use the Windows PE system to save data, detect hardware, install system, etc., a ready-made PE is enough for them. If you feel that many PEs are too bloated or overqualified, then Win10 Tiny PE may be what you need.

Some old programs have issues when trying to adapt to modern operating system and hardware. Thereinto, some old games cannot be rendered in fullscreen due to either an intentional omission or incompatibility reasons, e.g.: games designed for 4:3 displays have black vertical bars on wide screens.

To protect the security of the computer, in addition to anti-virus software, another means is a firewall. The firewall has two main purposes: 1) To resist the attack of the external network on the local computer; 2) To effectively control the access of the local program to the Internet. It's a pity that Windows' built-in firewall has a single function and poor usability, so there are a large number of third-party firewall programs. Of course, all third-party firewalls implement corresponding functions based on the operating mechanism of Windows' built-in firewall.

LeoCAD is a 3D CAD program for creating virtual LEGO models by using parts from LDraw library, developed by Leonardo Zide in 1997, using C++. It's free and open-source, and works on Windows, Mac and Linux platforms. It enables users to create their own LEGO models as they wish.

LDtk (short for Level Designer toolkit, formerly called LEd) is a free and open-source 2D level editor for Windows, Mac and Linux platforms, developed by deepnight (Sébastien Bénard) from France, who are the former director of the well-known indie game Dead Cells, with 20+ years of experience for creating various games.