Musify is an excellent music batch download and conversion tool, developed by iTubeGo from Hong Kong in China. It can not only help users quickly download/extract high quality music from over 1000 online music/video sharing sites for offline listening, but also convert audio/video to various common audio formats for playback on different devices, so users don't need to bother about transcoding. Moreover, the conversion process does not lose the original audio quality.

Starry Night is the world's most powerful astronomy simulation software and most professional astronomy telescope control software for Windows and Mac platforms for now. It is built specially for astronomy enthusiasts to best meet the needs of any amateur astronomer and any advanced observer. It makes space observing as fun and efficient as possible, and helps astronomy enthusiasts take their astronomy knowledge to the next level.

The most important thing for publishers is to have a professional and user-friendly layout design tool to make their work more efficient. There are many page layout design programs, but few of them are professional, easy-to-use or efficient. Thereinto, Affinity Publisher is a desktop publishing edge tool for Windows and Mac platforms, developed by Serif Europe from United Kingdom in 2019. Compared to the popular Adobe InDesign and QuarkXPress, it not only has everything a professional-grade desktop publishing tool should include, but it's also easier to use and runs more smoothly.

FBReader is a very powerful, all-in-one eBook reader and manager for PC and mobile platforms, developed by Nikolay Pultsin from Russia in 2005, using C++ and Java. It not only can be used to read text-based novels, but also supports reading comics, office documents, etc. In short, it is a very good choice whether for study, entertainment or office.

With the development of network technology, our demand for file synchronization and backup is also becoming stronger. While various web disk services provide us with convenience, they also bring a lot of restrictions and risks in terms of speed, security and privacy. There are many cloud synchronization solutions, such as Seafile and Nextcloud, which are feature-rich but bulky and difficult to deploy cloud disk programs. But if we only need to synchronize files, then a better choice is Syncthing. In comparison, it is lighter, easier to deploy and use, more secure, and especially has faster file transfer.