WordConvert is a simple tool that works by drag and drop. Drop files (AbiWord, Applix Words, ClarisWorks/AppleWorks, DockBook, HTML, ISCII Text, Microsoft Word, Office Open XML, OpenDocument, OpenOffice Writer, OPML, Rich Text Format, StarWriter, T602, Text, WML, WordPerfect or XSL-FO), choose the output format and click on the Go! button.
WordConvert is a good example of a front-end made for an external application (here AbiWord). It can serve as a basis for other converters. For this purpose, it checks that the files submitted have the required extension, that they are not folders and it ensures that the output names are consistent. Some improvements are possible (progress bar, checking the presence of the output file, processing the errors of the underlying tool, etc.). But it’s already good enough to compete with many other tools… free or not.
Source and win32 exe are here: