WebcamMax is a powerful and interesting special effects adding tool for web cameras. It can add video, scene, image, Flash and a variety of colorful fantastic effects for a webcam, which can be played through all kinds of instant messaging software in real time. Even if your computer does not equip with a camera, you can also use the virtual camera of WebcamMax for video chat.

Many people feel very difficult when learning how to create a GUI application. One of the most important reasons is that they don't know where to start. In the search of PyQt relevant learning resources, I discovered this Rapid GUI Programming with Python and Qt. After a cursory glance at this book, I think it is very suitable for beginners who completely first contact with Qt and PyQt.

PDF Shaper is a free and very practical all-in-one type of PDF managing tools box from Spain. Its functions cover almost any aspects of daily PDF files managing operations. Although the inbuilt functions are numerous, it comes with small file size and low system resource occupancy. Plus, because of its intuitive and elegant user interface, users are able to get started with it in no time! In a word, it's a necessary and efficient PDF toolkit.

CoolFormat is a free and open-source source code formatting tool from China. It is universal for many popular programming languages, such as C\C++\C#\CSS\HTML\Java\JavaScript\JSON\Objective-C\PHP\SQL\XML.

MathType is supposed to be the most powerful and professional interactive mathematical formulas editor. It can help users easily insert complex mathematical expressions and symbols into all kinds of documents and apps (such as office documents, web pages, desktop publications, demonstrations, E-learning, Tex, LaTeX, MathML, etc.), and has been widely used in the education, teaching, scientific research institution, engineering, paper writing, typesetting, science test papers editing, and many other fields.