Switch (full name: Switch Audio File Converter, formerly called Switch Sound File Converter) is a very stable, user-friendly, comprehensive and professional audio format universal converter/compressor/extractor for Windows and Mac platforms, developed by NCH Software from Australia. It helps user convert and encode sound files quickly and easily.

USB flash drive and all types of Flash Cards (SmartMedia =SM card, Compact Flash = CF card, MultiMediaCard = MMC card, Secure Digital = SD card, Memory Stick) have long been used on a large scale and widely available, but they have some other applications besides being storage devices. For example: As a boot disk for Windows PE OS, as a system installation disk, as a replacement for various Live CDs, and so forth. Today we are going to talk about using USB flash drive (Flash Card needs to cooperate with the card reader to work the same way) as a key for locking/unlocking your computer with ease.

Replay Video Capture is a program for capturing and recording high-quality videos (along with audio) from the screen of your monitor - that's anything playing on your PC, including anything you can hear from the speakers. It has a compact and clean UI with a clear arrangement of buttons. You can record what happens on the entire desktop, on only the active window, or on the selected recording area.

YouTube Downloader Converter is a very powerful web video downloading tool, which integrates video download, conversion and playback in one place. It can help us easily download videos in various formats and definitions (quality) from thousands of video websites such as YouTube, Vimeo, MyVideo, etc., allows to directly convert the downloaded video into audio or other video formats, and allows to play them directly from the built-in media player.

If there is some software that adds a watermark to video, then there must be some other program that removes the watermark from video. Watermarking a video is very simple and fast, because its actual operation is just to add watermark to each frame in batch. However, removing the watermark in a video is just like removing the watermark from an image - there are two problems: 1) more complex image processing techniques are required (mainly to calculate and refer to the color distribution around the selected area); 2) it's unable to remove the watermark perfectly, there will always be some flaws.