WPS Office (formerly called: Word Processing System, AKA: Kingsoft Office, and now represents Writer, Presentation, Spreadsheets) is the most popular free and cross-platform office suite in the world at present. It has a longer development history than Microsoft Office (initial release:1988 VS 1990). We can say, it is the only best one in so many free alternatives of MS Office.

Nitro Pro (AKA: Nitro PDF Professional) is a versatile and fast PDF solution specially designed for business users. It is a combination of functions like PDF reading, editing, creating, commenting, optimizing, as well as the Office document formats conversion. It is one of the most user-friendly PDF solutions that can completely replace, direct challenge the expensive, bloated and slow Adobe Acrobat.

The traditional desktop dictionary tools (such as Lingoes, Babylon, etc.) have become more and more bloated, and their translation efficiency is getting lower and lower. QTranslate is a versatile free and excellent multi-language translation tiny app from Russia. It is based on multiple online translation engines and makes its UE achieve an extreme. Depending on compact and simple UI, powerful and fast translation, it has grown into a new favorite among all translation tools.

Dia (full name: Dia Diagram Editor) is a vector-based and Visio-like structured diagram drawing tool made by Alexander Larsson from Germany. It's lightweight, free to use and open-source, supports for Windows, Mac OS X and Linux.

For any PDF solutions that want to grab the market share from Adobe Acrobat, it has to start from the availability and usability. In this case, the performance of Bluebeam Revu makes users' eyes bright at the moment.