If you need to deal with 3D projects or models frequently, then you often need to convert between multiple 3D file formats, so as to operate proprietary file formats supported by other 3D software in your 3D software. In this case, what you need is a 3D file conversion tool. If you have used FinalMesh, 3D Object Converter, you can also give Spin 3D a try.

Solar Master is a solar energy calculator application for Android, developed by Afeef Mohammed from Yemen. It can easily and accurately calculate the needs of solar and power systems, such as the correct angle and orientation of solar panels, the number of solar panels and batteries required, the size of power inverter/UPS, controller and charger, and how to connect the solar panels in series and parallel with the battery according to the voltage of system/inverter.

Windows Photo Viewer, a built-in picture viewing program in Windows, is not only very slow to open large pictures, but also very laborious to view large-sized pictures (you need to reach the top with great effort, and then drag and drop pictures with great effort). In order to obtain a faster, more efficient, and better image viewing experience, we often need to use a third-party image viewer.

The Moon and Sixpence is one of the most important full-length novels, written by William Somerset Maugham from United Kingdom and published in 1919. Based on the life of the French post-impressionist painter Paul Gauguin, the work shows the conflict between ideal and reality, spirit and matter, and has aroused the deep thinking of generations of readers.

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).