OfficeRTool (AKA: Office(R)Tool) is a script-based free and open-source advanced tool for downloading, installing, activating, configuring or fixing Microsoft Office 2016, 2019 and 2021 on Windows 7 and higher with one click. It was originally created by ratzlefatz, now maintained by Mr Dino.

UMLet is a free and open-source lightweight UML drawing tool (rather than a modelling tool with underlying dictionary or directory of reusable design objects) for Windows, Mac and Linux platforms, written in Java. It is powerful and easy to use, can be used as a standalone app, can also be used as a plug-in for Eclipse, and even provides a browser-based online version.

With the popularity of mobile phones, sports cameras, and drones, we will accumulate a lot of video footage in our hands. Usually only a small part of it is worth keeping, otherwise our disk space will be crowded quickly over time. The problem is, the video cutting efficiency of traditional video editing software is too low. If you are looking for a program that focuses on fast video cutting, then don't miss Simple video cutter.

Tangible Software Solutions (formerly called Tangible Source Code Converters) is actually the name of a software development company from Canada, and this post is a collection of all their source code converters. Since each converter has a different name, the name of their developer is used as the title of this post. These converters can convert between VB.NET, C#, Java, C++ and Python, saving developers countless hours of painstaking work and valuable time.

There are already countless chatting software (such as WhatsApp, Skype, Discord, Facebook Messenger), but almost all of them are non-free software based on central servers, and their security and privacy are not guaranteed (any chat history of you will be sold to various companies). Many of them claim to encrypt communication content, even with end-to-end encryption, but when a platform is proprietary, there is simply no way for others to verify that it is as secure and private as it promises to be. Of course, there are some really safe and reliable ones, but they are frequently blocked by governments of various countries and cannot continue (such as Signal, Telegram).