Winamp was first released in 1997, and had taken the world since Version 2 (released in 1998). From Version 3 (released in 2002), Winamp started losing a lot of users. The subsequent V5 and V5.x are both powerless. We can see that, even now, Winamp still hasn't given up the hope of rebirth! While the key to its fate is its frequent owners' change hands (being acquired by AOL was a fatal mistake) and indecisive business pattern and profit model (free -> commercial -> free) - reduced to a pure trade good, which made iTunes perfect.

RPG Maker (AKA: RPG Tsukūru, RPGツクール, RPG Tkool) is the most popular 2D RPG games development engine developed by Enterbrain company from Japan. It's both simple enough for a child and powerful enough for a developer. The whole series mainly includes: RPG Maker 2000, RPG Maker 2003, RPG Maker XP, RPG Maker VX, RPG Maker VX Ace, and RPG Maker MV.

The CINEMA 4D produced by MAXON Computer from Germany is a set of 3D drawing software integrated with 3D modeling, animation and arithmetic. It has been famous for its ultra high speed and powerful rendering plug-ins (amazing renderer and particles system).

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.

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.