WinSlap is a free and open-source handy tool for quickly configuring a Windows 10 installation with a series of useful tweaks and settings. It was originally developed for personal use only by Sven Mauch from Germany, so there is no guarantee that it works as intended, doesn't break your system or is actively maintained.

XEBRA is a little-known but excellent free PlayStation emulator for Windows and Android platforms, developed by Dr.Hell from Japan. It strictly focuses on the accuracy of PlayStation emulation, does not use any plugins, and only outputs in native video resolution. At the same time, it is also one of the very few PSX emulators that is compatible with PocketStation.

One of the common situations when you get music from the Internet is that there is no album cover in some music files. For music aficionados, this is unbearable. Although some music player programs have built-in features such as tag and album cover fixes, they are still not professional or powerful enough to be considered indispensable.

In the process of publishing various types of files on the Internet, whether the document has been tampered with is the main concern of both the publisher and the receiver. That's why message digest algorithms like MD5, CRC32 and SHA-1 are used to calculate and check the unique hash value for files, so as to ensure that the files in circulation remain untouched. This is where utilities like HashMyFiles come in.

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.