These folks have a free and a Professional version. This Professional version looks like a good alternative to Microsoft Office and the price is right - PRO for FREE! Site says:
A Cost-effective [yeah even better when free!] office suite that is small in size but big on features.
As an office suite of desktop applications, Kingsoft Office consists of a word processor—Writer, a spreadsheet program—Spreadsheets and a presentation program—Presentation. Compared with other office suites, Kingsoft Office is regarded as one of the best office applications with user-friendly interfaces and excellent performance.
In addition to innovative features in the last version such as a built-in PDF creator, the latest version has added various new features, allowing you to switch between the 2013 and classical interfaces, adjust your paragraph formatting and table dimensions with drag and drop, save files as more formats (such as .docx, .docm, .xlsx and .xlsm) and insert a movie or background sound into a PPT slide.
Kingsoft Office Suite Professional 2013 will not only enable you to fulfill data analyzing needs in business, but to turn your innovative ideas into illustrative documents or presentations.
In addition to the features of Office Free 2013, such as one million rows and columns in worksheet, saving files as DOCX, XLSX formats, the Professional edition supports VBA and Macro.
The suite is robust and efficient enough to be trusted with even your most complicated office tasks.
I use Kingsoft Office on Android (also free) without any issues so far after 12 months use.