Flip PDF revolutionizes the way digital content is presented and shared, designed for businesses, educators, and individuals alike, developed by FlipBuilder from Hong Kong in China. It enables users to convert static PDF files into engaging, interactive flipbooks that closely mimic the experience of reading a physical book.

Epic Pen is a powerful and versatile tool that allows users to add text, drawings, and other annotations to their computer screens in real-time, developed by Tank Studios from Ireland. It is particularly useful for professionals who need to highlight or draw attention to specific parts of their screen during presentations, meetings, or while collaborating with others.

Without music knowledge foundation, it is impossible to study music deeply. For example, when you are teaching yourself musical instruments or vocal music, you often have trouble reading complex sheet music. But don't be discouraged. Learning music is about effective practice with a method and a goal, not headless practice. In the absence of time and financial resources to find a professional teacher to learn from, it is very important to choose a useful and easy to use music learning software.

Synchro (AKA: Synchro Studio) is a famous traffic signal coordinating and timing design software developed by Trafficware. It was developed according to the standard HCM (Highway Capacity Manual) specification of US Department of Transportation. The parameters in this standard are set according to the performance of vehicle, driver's behavior habits, traffic regulations, and so forth. Some results obtained by using it (such as delay time, service level, exhaust emission, etc.) have important reference value as relative parameters for schemes comparison, and its signal timing is very reasonable.

In the process of expressing ideas and conveying information, a picture is worth a thousand words. Likewise, the effect of a short video is better than that of a pile of pictures + text. Occasionally, we can see some creative short animation videos with hand-drawn style on the Internet, for example: one hand holding a paintbrush automatically draws picture after picture, just like a fast-forward sand painting. This kind of hand-drawn video is not only creative, but also very attractive to the audience.