MikuMikuDance (MMD for short) is a very small, simple but powerful and easy-to-use free 3D animation program, developed by Yu Higuchi (樋口 優) from Japan in 2008, using C++ and DirectX SDK. It enables users to animate and create 3D animated films, and is mainly used by fans of the Sony/Sega VOCALOID product to make promotion videos of VOCALOID series.

capella audio2score is a audio to score conversion tool, developed by capella-software from Germany. It analyzes and extracts music scores from your recording files. The recognized notes are examined, sorted and then sensibly poured into a new arrangement. This can be done for piano, quartet, etc.

Cascadeur is a unique physics-based animation program, developed by Nekki from Cyprus in 2019. It enables animators to create any complex and realistic action sequences. Users only need to create a few key points in the animation and other corresponding animations will be automatically calculated. Its goal is to eliminate routine work, lower the barrier to entry for beginners, and overcome the limitations of motion capture technology and real stunt man.

Note taking software is currently the best way to organize and manage personal knowledge, especially for modern people, electronic notes are essential (traditional paper notes are too inefficient and too limited). Although there are many note-taking applications today, such as the free OneNote and Joplin, or the expensive, arrogant Roam Research, the pursuit and desire for higher efficiency still exists.

The types of bad sectors include logical bad sectors, physical bad sectors, and the more common read/write delays. If there are sectors to be remapped in S.M.A.R.T., you should pay attention to the health of the hard drive. When we find that we cannot enter the system, and the hard disk cannot be recognized when booting or under PE, we should use a hard disk detection tool to make a scan to see whether this problem is caused by bad sectors. Logical bad sectors on a hard disk can generally be repaired using DiskGenius, but if they are physical bad sectors, then for ordinary users, your only hope is HDD Regenerator, before you send it to a professional for repairs.