GNS3 (short for Graphical Network Simulator-3) is a cutting-edge and feature-rich network simulation platform for Windows, Mac and Linux platforms, developed by SolarWinds from Canada in 2008. It allows users to create virtual network environments and test various network configurations with ease.

Sublime Merge is a powerful and friendly GitHub client for Windows, Mac and Linux platforms, developed by Sublime HQ from Australia, the same author of the popular text and code editor among developers - Sublime Text. It inherits Sublime Text's elegant and beautiful UI design and smooth operating experience, and supports a high degree of customization through simple JSON files.

reWASD is a key mapping tool specifically designed for game controllers on Windows, developed by Disc Soft (the same creator of DAEMON Tools). Through it, users can remap the controller keys on a computer, relieve some limitations of the controller, and customize restricted functions. In other words, it enhances gaming experiences by allowing users to remap their controllers, keyboards, and mice to their liking.

Freeplane is a free and open-source mind mapping tool for Windows, Mac and Linux platforms, written in Java, developed by Dimitry Polivaev in 2007. It was forked from the FreeMind project, but adds features and tags not supported by FreeMind.

Kon-Boot (AKA: kon boot or konboot) is a powerful, professional, and popular login password bypassing rather than removing tool for Windows and Mac platforms, developed by thelead82 (LEAD82) from Poland. It enables you to access any computer even without knowing the account and password, and supports almost all versions of Windows and Mac. If you've forgotten your system password, or want to infiltrate some computers that have login passwords or even BitLocker disk encryption feature enabled, then Kon-Boot can help.